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89 Iroc - 355,twin gt35's,megasquirt

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Old 01-05-2012, 07:52 PM
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Re: 89 Iroc - 355,twin gt35's,megasquirt

See I was reading about them on another forum and some of the "top" guys talked alot of crap on them. I've never seen them or what not, and remain skeptical until I do see setups using them. I always liked the idea just not the price tag Good luck with your setup, i'd be very interested in seeing how that turns out.
This is from 1998 when they were still the Old Dominion brand, but the cylinder heads were much improved since then;

http://www.hotrod.com/techarticles/e...t/viewall.html
Old 01-05-2012, 09:02 PM
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Re: 89 Iroc - 355,twin gt35's,megasquirt

unless you can physically see them and hold them, id think twice about ordering a set unless its a real set of old dominions from a legit seller.

http://forums.corral.net/forums/5-0-...date-long.html
Old 01-05-2012, 09:17 PM
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Re: 89 Iroc - 355,twin gt35's,megasquirt

Originally Posted by 34blazer
unless you can physically see them and hold them, id think twice about ordering a set unless its a real set of old dominions from a legit seller...
Russ Arao worked at Dominion, and these are his creation. Buying from the link I provided above is buying directly from the man who developed them... he is as legit as they come in regards to these heads. Not to mention, I will only throw my money down in person, and take them with me the very same day.



Old 01-05-2012, 09:28 PM
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Re: 89 Iroc - 355,twin gt35's,megasquirt

yeah i just remembered that thread and thought id share
Old 01-06-2012, 01:49 AM
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Car: 89 RS 89 iroc 87 firebird
Engine: 3.1 Turbo/ 355 twin turbo
Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: 89 Iroc - 355,twin gt35's,megasquirt

Originally Posted by 34blazer
hit me up, im like 2 mins away from LVMS and i have no gearhead friends over here either lol
anychance u can get me a list of shops in the area that have dynos so i can try to setup a dyno apt for the 27th.
ill deff let u know when im down that way
Old 01-06-2012, 11:47 AM
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Re: 89 Iroc - 355,twin gt35's,megasquirt

Originally Posted by project89
if shipping wouldnt cost 3x the asking price for the shortblock id buy it lol...
Dave, lemme know if you want the LT1 intake that I never finished, comes with throttle body and fuel rails, you just need to finish welding it up. I have no more use for it...
Old 01-06-2012, 04:30 PM
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Re: 89 Iroc - 355,twin gt35's,megasquirt

Originally Posted by Street Lethal
Dave, lemme know if you want the LT1 intake that I never finished, comes with throttle body and fuel rails, you just need to finish welding it up. I have no more use for it...
i still want that heaterbox but u never gave me a price lol, what all needs to be welded on the lt1 intake still
Old 01-06-2012, 04:56 PM
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Re: 89 Iroc - 355,twin gt35's,megasquirt

Originally Posted by project89
i still want that heaterbox but u never gave me a price lol, what all needs to be welded on the lt1 intake still...
The TPI distributor hole, it's already fit to install, just needs to be clamped in place and tigged and/or migged, that should take no more than twenty minutes to do. The bolt holes leading to the cylinder heads need to be aligned, I would just fill in all the holes with aluminum and make new ones based on the intake gasket that matches your cylinder heads, that too takes a short amount of time to do. Other than that, you would need to run a remote thermostat housing. Could do everything, including the box, as a package deal if you want bro...
Old 01-06-2012, 05:01 PM
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Car: 89 RS 89 iroc 87 firebird
Engine: 3.1 Turbo/ 355 twin turbo
Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: 89 Iroc - 355,twin gt35's,megasquirt

Originally Posted by Street Lethal
The TPI distributor hole, it's already fit to install, just needs to be clamped in place and tigged and/or migged, that should take no more than twenty minutes to do. The bolt holes leading to the cylinder heads need to be aligned, I would just fill in all the holes with aluminum and make new ones based on the intake gasket that matches your cylinder heads, that too takes a short amount of time to do. Other than that, you would need to run a remote thermostat housing. Could do everything, including the box, as a package deal if you want bro...
give me a price on it all shipped to 84713, lol i havent been driving the car cause i have no heat lmao
Old 01-06-2012, 05:28 PM
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Re: 89 Iroc - 355,twin gt35's,megasquirt

Originally Posted by project89
anychance u can get me a list of shops in the area that have dynos so i can try to setup a dyno apt for the 27th.
ill deff let u know when im down that way
yeah ill do some looking around, theres got to be some in the area too.
Old 01-06-2012, 05:36 PM
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Car: 89 RS 89 iroc 87 firebird
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Transmission: a4 w/ 4500 stall/ a4 / t5
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Re: 89 Iroc - 355,twin gt35's,megasquirt

Originally Posted by 34blazer
yeah ill do some looking around, theres got to be some in the area too.
thanks man
Old 01-07-2012, 09:01 AM
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Re: 89 Iroc - 355,twin gt35's,megasquirt

i donno about the 280hp gain with the head swap.
Old 01-07-2012, 06:17 PM
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Re: 89 Iroc - 355,twin gt35's,megasquirt

LDL speed shop right at LVMS, need to schedule 2-3 weeks in advance.

http://ldlspeedshop.com/index.php



i have a contact that may have a couple more so ill ask him later after he gets off work....
Old 01-07-2012, 08:49 PM
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Car: 89 RS 89 iroc 87 firebird
Engine: 3.1 Turbo/ 355 twin turbo
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Re: 89 Iroc - 355,twin gt35's,megasquirt

thnx man ill give them a call tommorow
Old 01-09-2012, 09:43 PM
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Re: 89 Iroc - 355,twin gt35's,megasquirt

rob i get paid tommorow get me that price and cost of shipping

right foot 1 transmission 0

i knew it wouldnt last long as it was never built to handle a forced induction motor, it was built to go behind a hot n/a355 sb but i did figure it would last a lil longer then it did

round 2 to ensue soon
Old 01-09-2012, 11:02 PM
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Re: 89 Iroc - 355,twin gt35's,megasquirt

Originally Posted by project89
rob i get paid tommorow get me that price and cost of shipping

right foot 1 transmission 0

i knew it wouldnt last long as it was never built to handle a forced induction motor, it was built to go behind a hot n/a355 sb but i did figure it would last a lil longer then it did

round 2 to ensue soon
still gonna make it out this way? prolly not since you blew up the trans lol
Old 01-09-2012, 11:12 PM
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Re: 89 Iroc - 355,twin gt35's,megasquirt

Originally Posted by 34blazer
still gonna make it out this way? prolly not since you blew up the trans lol
ive got a spare trans i can drop in the car for the time being
Old 01-10-2012, 09:16 AM
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Re: 89 Iroc - 355,twin gt35's,megasquirt

Originally Posted by project89
rob i get paid tommorow get me that price and cost of shipping...
Let me know exactly what you want/need Dave. A few pics without the LT1 throttle body, but the throttle body comes with it either way. The back piece fits exactly where it needs to be, all lined up, just needs to clamped in place and welded. The bolt holes I would do over again by filling all of them with aluminum, then redoing/matching them to your setup...

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Old 01-10-2012, 07:12 PM
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Car: 89 RS 89 iroc 87 firebird
Engine: 3.1 Turbo/ 355 twin turbo
Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: 89 Iroc - 355,twin gt35's,megasquirt

the intake and heaterbox/blowermotor
Old 01-12-2012, 09:22 AM
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Re: 89 Iroc - 355,twin gt35's,megasquirt

Originally Posted by project89
the intake and heaterbox/blowermotor...
I pulled everything out of the garage, heater box, blower motor w/wiring, and LT1 intake stuff. Do you need the LT1 intake ported Dave, as I can open that sucker up tremendously for you...
Old 01-12-2012, 09:27 AM
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Re: 89 Iroc - 355,twin gt35's,megasquirt

What tranny are you using??
Old 01-12-2012, 11:16 AM
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Car: 89 RS 89 iroc 87 firebird
Engine: 3.1 Turbo/ 355 twin turbo
Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: 89 Iroc - 355,twin gt35's,megasquirt

Originally Posted by Street Lethal
I pulled everything out of the garage, heater box, blower motor w/wiring, and LT1 intake stuff. Do you need the LT1 intake ported Dave, as I can open that sucker up tremendously for you...
nope dont need it ported
Old 01-12-2012, 11:37 AM
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Car: 89 RS 89 iroc 87 firebird
Engine: 3.1 Turbo/ 355 twin turbo
Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: 89 Iroc - 355,twin gt35's,megasquirt

Originally Posted by noboostnogo
What tranny are you using??
700r4 for now eventually a th400 /w brake or 4l80 with full manual vb and trans brake
Old 02-07-2012, 08:21 PM
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Car: 89 RS 89 iroc 87 firebird
Engine: 3.1 Turbo/ 355 twin turbo
Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: 89 Iroc - 355,twin gt35's,megasquirt

i wrecked the car today dont know what im going to do with it yet as it got towed over to the body/frame shop since it wrinkled the strut tower, if its not saveable i will be parting out the car.

the turbo stuff will not be split up but rather tried to be sold as a complete kit

headers,turbos,coldside,intercooler,downpipes,megasquirt ecm and harness,new precision 65# injectors, twin areomotive 340lph pumps, oil lines,drain lines,wastegates etc etc
Old 02-07-2012, 08:25 PM
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Re: 89 Iroc - 355,twin gt35's,megasquirt

Thats bad news man it was looking nice too
how much you gonna be asking for it?
Old 02-07-2012, 08:30 PM
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Car: 89 RS 89 iroc 87 firebird
Engine: 3.1 Turbo/ 355 twin turbo
Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: 89 Iroc - 355,twin gt35's,megasquirt

i need to figure out what i have in it all first, the body shop said right now its a 50/50 shot at it being worth to fix.
from what i could tell the passenger side strut tower has a nice wrinkle, the passenger side a-arm and spindle are broke, think it twisted up the k member and god knows what else
Old 02-07-2012, 09:12 PM
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Re: 89 Iroc - 355,twin gt35's,megasquirt

wow that freakin sucks! hope you can get it fixed


if not i know where you can get a nice 2dr s10 blazer and put one of those turbos on lol, jk
Old 02-07-2012, 09:54 PM
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Car: 89 RS 89 iroc 87 firebird
Engine: 3.1 Turbo/ 355 twin turbo
Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: 89 Iroc - 355,twin gt35's,megasquirt

if its not fixable im going to switch to something with only 2 wheels
maybe a gsx-r or busa
Old 02-07-2012, 10:51 PM
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Re: 89 Iroc - 355,twin gt35's,megasquirt

Hey man don't feel bad at least it was t ur dad driving it and u watching from outside how he ends up in the ditch with ur turbo transam he hit the ditch so hard that the driver side tower dented the brake booster most people would have said it was totaled but I didn't wanna take everything out of it and redo it all so we took it to a frame shop and fixed it. Don't give up on the car I almost did but I'm glad I didn't is it ok to ask what happened?
Old 02-07-2012, 10:55 PM
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Re: 89 Iroc - 355,twin gt35's,megasquirt

Look at post 198 page 4 on my thread ull see pics of how bad it was after I removed the fenders and stuff
Old 02-07-2012, 11:19 PM
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Car: 89 RS 89 iroc 87 firebird
Engine: 3.1 Turbo/ 355 twin turbo
Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: 89 Iroc - 355,twin gt35's,megasquirt

simple anwser is i had the car out after putting the new 700r4 in it and was messing around being an idiot on the dirt back roads. thought i was like ken block for a few mins till i ended up in the ditch.

noones fault but my own though shouldnt have been stupid trying to drift around the corners
Old 02-09-2012, 03:29 PM
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Re: 89 Iroc - 355,twin gt35's,megasquirt

awww man, i was so excited to see how this project turned out. Sucks to hear man but that can happen I know.
Old 02-09-2012, 06:31 PM
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Car: 89 RS 89 iroc 87 firebird
Engine: 3.1 Turbo/ 355 twin turbo
Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: 89 Iroc - 355,twin gt35's,megasquirt

it might not be dead, talked to the body shop and the crease inthe strut tower isnt as bad as i thought, and its foward of the strut so its easier to fix.

its looking like new strut/mount spindle,spring, a-arm and k-member so far along with a fender ill know for sure in a few days though
Old 02-18-2012, 02:17 AM
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Car: 89 RS 89 iroc 87 firebird
Engine: 3.1 Turbo/ 355 twin turbo
Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: 89 Iroc - 355,twin gt35's,megasquirt

car will be back home next week !!!!!!
Old 03-20-2012, 03:53 PM
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Re: 89 Iroc - 355,twin gt35's,megasquirt

Updates...???
Old 03-20-2012, 04:46 PM
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Car: 89 RS 89 iroc 87 firebird
Engine: 3.1 Turbo/ 355 twin turbo
Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: 89 Iroc - 355,twin gt35's,megasquirt

few weeks ago i started shaving the rear bumper cover pics in a thread in the fab forum, ill also be shaving were the badges go on the gfx and the emblem on the nose
dorrhandles have to stay since the local tracks frown apon shaved door handles
and recently i
swapped out the dual zr-1 pumps for brand new dual aremototive 340lph stealth pumps
puled all the sound deadning material out of the rear seat/trunk area
starting to remove all the seam sealler from all the seams in the car so i can stich weld them with my mig to stiffen up the car and stop all the normal squeaks and rattles
once im done with that ill start installing the 10pt cage and door bar swingouts

id have more done but for a week it wa sin the 70's and the last 3 days its been snowing ,later this week were supposed to get back into the mid70's so ill get more done on it

edit
almost forgot ill be selling my prescision turbo 65# low z injectors they have about 150 miles on them
once there sold ill be upgrading to 120# injectors

Last edited by project89; 03-20-2012 at 04:50 PM.
Old 03-22-2012, 06:56 AM
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Re: 89 Iroc - 355,twin gt35's,megasquirt

How is she running though, is she dialed in with what she already has? Any vids...?
Old 03-22-2012, 03:09 PM
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Car: 89 RS 89 iroc 87 firebird
Engine: 3.1 Turbo/ 355 twin turbo
Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: 89 Iroc - 355,twin gt35's,megasquirt

after swaping the fuel pumps im chasing the same issue i had a few months ago
fire the motor up and the car runs about 5 minutes then it just dies.it dosent run rough or anything it just dies like somone shut the key off. if i try to refire the motor right away it will not fire.
if i let it sit for about 5 mins it will refire and do the same thing again

fuel presure checks out at a constant 72psi and it never drops, so im thinking the icm is going bad going to pick up a new one and see what happenes
Old 03-22-2012, 05:30 PM
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Re: 89 Iroc - 355,twin gt35's,megasquirt

Originally Posted by project89
fuel presure checks out at a constant 72psi and it never drops, so im thinking the icm is going bad going to pick up a new one and see what happenes...
Did you coat the current ICM w/dielectric grease...?
Old 03-22-2012, 05:38 PM
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Re: 89 Iroc - 355,twin gt35's,megasquirt

its still the factory 1989 icm, going to swap it out
Old 03-22-2012, 05:50 PM
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Re: 89 Iroc - 355,twin gt35's,megasquirt

the only question now is do i try to hunt down a real ac delco, or do i try out an mallory/acell or msd module
Old 03-22-2012, 06:01 PM
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Re: 89 Iroc - 355,twin gt35's,megasquirt

I have a couple of AC Delco 8-pin modules lying around...
Old 03-22-2012, 06:15 PM
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Re: 89 Iroc - 355,twin gt35's,megasquirt

how much u want for one?
Old 03-22-2012, 07:41 PM
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Re: 89 Iroc - 355,twin gt35's,megasquirt

Have no idea, throw me an offer lol...
Old 03-25-2012, 10:00 AM
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Re: 89 Iroc - 355,twin gt35's,megasquirt

i actually ende dup buyinig a billet duistributor off ebay for 55 bucks comes with a ne wmoudle so im going to try that, if that fails on me ill switch to a crank trigger and modify the dizzy for a cam signal
Old 03-29-2012, 07:49 PM
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Re: 89 Iroc - 355,twin gt35's,megasquirt

well i got bored today so me and a friend went out to some of the backroads and marked out a 1/4 mile.
armed with a stopwatch and my speedo i cam up with a very dispointing 12.63 speedo read just about 130mph when i hit the marker so my speedo has to be off
did that @ 15 psi

even with not being able to actually launch the car i still firgured id get a better time that that specially at 15 pounds of boost
Old 03-29-2012, 08:00 PM
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Re: 89 Iroc - 355,twin gt35's,megasquirt

Hey ur stopwatch could be off 130 should bin or close to 10s depending on launch. Btw do u have a link to the thread in the fabrication section? I couldn't find it
Old 03-29-2012, 08:26 PM
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Re: 89 Iroc - 355,twin gt35's,megasquirt

Originally Posted by noboostnogo
Hey ur stopwatch could be off 130 should bin or close to 10s depending on launch. Btw do u have a link to the thread in the fabrication section? I couldn't find it
i figured it would be atleats omewhere inthe high 11's,as far as the mph who knos i did have to peddle the car alot in 1st and 2nd.
as far as the 130 it just didnt feel that fast maybe 120 but i still think more around 115mph.then again the car rides so nice it may just be to hard to tell and speedo may be infact correct

which thread r u looking for?
Old 03-29-2012, 08:30 PM
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Re: 89 Iroc - 355,twin gt35's,megasquirt

Originally Posted by project89
well i got bored today so me and a friend went out to some of the backroads and marked out a 1/4 mile.
armed with a stopwatch and my speedo i cam up with a very dispointing 12.63 speedo read just about 130mph when i hit the marker so my speedo has to be off
did that @ 15 psi

even with not being able to actually launch the car i still firgured id get a better time that that specially at 15 pounds of boost
Dave where some videos man?? LOL
Old 03-29-2012, 08:34 PM
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Re: 89 Iroc - 355,twin gt35's,megasquirt

Originally Posted by fasteddi
Dave where some videos man?? LOL
lol between my buddy yelling oh **** and holding onto whatever he could in the car, and having to keep both hands on the wheel to keep the car stright there was no way in hell i was going to chance holding my cellphone in one hand to take video.

i have to make some sort of mount for my cellphone,my new cell takes videos in hd so they should come out really nice


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