Found another option,some dome pistons has solid domes that can be cut down to fit different chambers or even be made into flattops with a popup,might be worth looking into,there is two partnumbres for a 4.08 bore 340. 340
Check these out if u get the compression ratio is where I want to be !
These are nice but of course made for 4.0 stroke set up versus what I have stock stroke Im going to get a custom set made but hopefully the tech guy can achieve that with my odd heads the 340 Rpm !
