I'm currently running a victor 5.0 but not really using the capabilities of the high rpm manifold. I'm shifting at 6200 now and was wondering what you guys are using for manifolds. Car made 402rwhp at 7 psi. Been a best so far a 10.6 on 7 psi on pump gas. Didn't know if a systemax would be a better bet or a efi spider or something.