As stated PipeMax is a good start but wouldn't not call it a be all end all for a comp deal, Having said that it was designed by a guy who has built a lot of record holding and championship winning Comp stuff, Larry Meaux. He also built the Hemi I have lying in the garage that I would love to rehome. For us we rely on someone with years of experience with this stuff. In our case its Tom Slawko and Dave Hughes.