Working on my 328is build. Its an auto to manual swap. Zf transmission,M3 clutch flywheel. Also out a M3 3.23 rear diff in. Supersprint exhaust. I plann on supercharging it. Im trying to decide what to go with the AA kit or VF kit? Maybe later put arp headstuds ans gasket,fmic and turn up psi. What are your guys opinions?