I don't think many people like SHM headers...these were the ones I believe that made it nearly impossible to get the oil filter off or something. Also, I know of a couple of people who are running water injection, World Tour for one and I believe PhatSVT. I do not believe anyone has ever posted dyno numbers before and after water injection. I do know that mark (worldtour) once posted a dyno of 293HP at the wheels. He was hoping to break 300 at spring zing 02. Spark problems. As far as exhaust...I dunno for sure but I would guess 3" Some people were talking about intercoolers but I think the biggest problem is space. Though, the turbo has an Intercooler...maybe they'll sell it seperate from the kit.
And no, mine is not s/c'ed or turbo'ed either...or should i say yet?
