Ok, I am trying to keep my compression ratio reasonable, so I have 2 choices. 15cc dish pistons with a 72 cc combustion chamber or 22cc dish pistons with a 64 cc combustion chamber. My thinking is that a bigger combustion chamber and small dish will keep the flame in the head rather than down in the piston. Am I over thinking this, does it make a difference? I am getting ready to order the rotating kit and need to choose the piston dish size to keep my compression between 9.2 and 9.5:1. Anybody have any educated reason to choose one over the other?