I have a fully worked 350 with a procharged 7 psi intercooled kit. Which lower carb intake will work best up to 5200 rpms?? So many to chose from, performer rpm air gap, weind stealth, performer, victor jr....etc... Do prochargers work better with short or long runners?

I did the swap on a 7.4 stock intake to a performer and found no gain. It did look better and ProCharger even told me I would not get any gain. Call Mike Cromer at ProCharger he is the best contack person there.