Heres the deal, i want to put new runners in, currently i am running stock runners which have been polished, nice but i want more ( u guys know how it is) what i have read is i can up grade to large tube runners or syamise runners, know if u guys know about these do you know if i would need a new plenium or a new intake. if i do what kind if i don't thank ***, you knoledge will be highly valued, thnx

 

you can modify the existing plenum to accept any runners you may purchase. Your existing base will work as well but you'll probably want to smooth the transition some and port match all components. Easier than it sounds.

Hodge

 

hey trans am, where are you in jersey? i'm going with the slp runners and yes you should definatly port the plenum to the runners. i went and bought everything that you could possibly need to port/polish/port match. if your not comfortable porting and port matching your self i would be willing to do it for you for a nominal fee to offset the cost of all this stuff. or if you want i could swap you for a plenum i've already done. let me know as i really enjoy doing this stuff.