So after buying my GTA I started looking the rpo codes online and some of the options seem to be rare/uncommon. It's a 1989 Trans am GTA, manual 5 speed, 305 engine and comes with t-tops. I'll post the RPO codes so you can check them out:
AM9 AN4 AQ9 AU3 A31 A90 BC8 B20 B84 CC1 C49 C60 DC4 DE4 DG7 D42 D5T D81 D9E E5Z E9Z FE2 GM3 G80 ILD J65 KC4 K05 K34 K68 LB9 MK6 MM5 NA5 NK4 N10 N64 PW7 QLC R7F R7K TR9 T93 T96 UA1 UB3 UF6 UK3 UQ1 UT1 UT4 U19 U25 U29 U62 U75 VAN VK3 V73 WS4 WS6 WW8 W62 X05 Y84 Z31 Z49 52P 6ZW 7ZW 8NL 81Q 82D 821 829 9NL.
I read through the "is my car rare/desirable?" thread and noticed that mine was on the list as: 366 (1989) (US Sales) GTA LB9/M5 - gtasourcepage.com (PHS) and GM3 -- Rear Axle Ratio (3.45) -- 366. What do you guys think?

 

I didnt know you could get t-tops and the big gear in 1989. Thats a cool car.

 

Yeah I was surprised when I saw that it had the bigger gears in too

 

All GTA's should have gotten the "Big Gear" one of my 87 Formula's is the same way, as is my 1989 Formula 350 Convertible, it has the 3.27...

The 3.45 on the Firebirds was more or less manditory on the GTA and Formula from 1987-1989... There are very few that were not equipped as such, mostly from what I have seen were export cars.

Camaro's you had to opt for the G92, where it was standard on the Firebirds.

Trans Am's there is nothing guaranteed there... Some years it was mandatory, others not so much.

 

If you ever wanna sell the convertable PM first. Back in the day my buddy had one I believe it was an 88 with an L03. I used to steal it from him all the time. It was slow but I loved cruising around in it. There was a girl with a black 350 around the neighborhood back then.