ok.so heres the story so far im building a a12 turbo suck through system ,,ive currently finished the head with port work k line guides crow cams valve springs ..ive got the turbo mounted and exhaust manifold side made... il be using the standard intake manifold with a small type of plenum,, not sure on this idea but stil tinkering with what to do in this area ....the only head ache i have is what pistons to use for this application ,,,,,,,,i relise that alot of things come into theories about piston relivance but what i need to know is on a turbo do i use a dome top flat top dished piston + gapless or gapped rings hmm.....where do i start..........