I had oversized valves put in my stock head and had some porting work done. So, I'll be sticking with that head.
I'm not expecting a huge power difference with the aluminum FR manifold. I just want to get it so I don't have to worry about breaking the stock plastic manifold. From what I've heard they can probablly only handle 15-18 psi, and that is around the amount boost I plan on running.
