exhaust
 

would a 94-98 12 valve exhaust work on a first generation with little modifacation i know the down pipe is different but would the rest work

I highly doubt it. Otherwise there would be no reason only 2 or 3 companies offer exhaust systems for 1st Gens. You can get a full 4" system with a 3" downpipe for around $350 though.

what brand of exhaust is for 350 or where can i find it

It was either BullyDog or Expandit, I can't remember which. Of course when I was looking ti was almost two years ago, so the prices may have gone up since then. Your best bet is to ask for a quote on this website (there is a section for it) and vendors will PM you with what they have and the price. If memory serves correctly though, it was 'LukesDiesel" who had that price.

well i apreciate it

what size is the stock dp

i think 3 inch

do aftermarket make a 4 in. dp? i want true 4 in. turbo back

Yes, some aftermarket systems come with a 4" downpipe. Rip at sourceautomotive, sells a 4" downpipe by itself as well, or you can get a full 4" system from him. That being said, if you have a stock turbo, or even an HX35, a 4" downpipe won't matter, as the turbo still has a 3" outlet. I'd wait to get a 4" downpipe, until I got a turbo with a 4" outlet.

oh i did not know this. that is useful knowledge. but an aftermarket 3in. is better than stock? less kinks and bends?