Do any of you have heads and cam done as well? I'm going to put one on my car in the next few weeks and was looking to see if anyone had done this. What kind of power gains are you getting? I'm at 427RWHP now with my heads and cam so what do you think I'll get? My heads are LPE stage 3 and flow at 325CFM. My cam is a 228/232 duration .588/.595 Valve lift 114 Lobe. Stainless works long tube headers and magnaflow exhaust.