damn man, it looks like you're going all out. But what I meant by the 15hp difference was between the C1 and C5, that's about all there is. The C5 is just a limited production version of the C1 that was hand tuned to make it slightly more powerful (technically). Whatever you do to the motor afterwards is a different story. Just think about it though, if you got a C1 instead and saved the $1,000, that's a little less than half a turbo kit right there. I guess you wouldn't have to bulletproof it if you kept it boosted under 9 psi. As for the supercharger idea, I never really was a fan, but it has it's benefits over a turbo and vice versa. Oh yeah... Nitrous :a: