caruana

79 rx7-I have bridgeported TII end housings lapped and nitrated, cermet coated housings race ported, S5 N/A rotors cermet coated, Full racing beat exhaust, TII lower intake manifold. I'm just wondering what upper intake manifold would be best for a N/A 13b with this combo. I'm think a FD upper because it has a bigger throttle body and the intake has no plenum, which makes me think a better less turbulent air flow or does the plenum make a less turbulent airflow lol. The 6 port upper intake manifold looks like it would be the worst because it bends so much before it goes to the lower manifold. I dont care about low end torque, just wondering what intake would give me the best peak HP numbers. Appreciate it guys.
John Paul Caruana