[Tony]

If your wanting 200whp without turbo or NOS, you will have to go with a B because its not gonna happen with a streetable D, even non-streetable im not sure about. I know on a z6 with p29 pistons, stage 3 cam, good intake and exhaust manifolds, and some head work, running on 91-93 your only gonna get around 150-160(not gonna get exact) out of it at the wheels. Thats running around a 12.5:1 C/R. I don't know if you can find some other pistons that can get that high of a C/R and make more power, but even if you did ofcourse with the high C/R turbo is out of the question, and I don't know jack squat about N2O.