if you try to use a stock exhaust/fenton intake, you probably won't get a bolt up fit, I went with a stock intake and fenton headers and had to grind/cut the little clamp pieces quite a lot in a couple of places to get them to fit. (once you start, you will see what I mean) some people grind the intake/headers, I preferred to gouge up the $5 easily replaceable parts rather than the $200 piece. However you can do as you please.