I'm just getting done with my engine rebuild. I bored 20 over. Cut crank down. New pistons 206 roller cam. Stock heads ported and polished. New rods. Harland sharp roller rockers. 49 turbo. Bigger injectors.bigger fuel pump. Down pipe.alky kit a few more bolt ons. Just trying to get an idea of how much boost to run and what kind of performance I can expect. I have a local Gn guy doing final tuning. Thanks.