The only way I see something like this working would be a shortblock with enough cubic inches to stress every head, and a piston that is dished to allow a nominal compression ratio of 11:1 with 72 cc heads, and use the same intake manifold on every head. Optimize the intake, whether it is a Performer RPM, or Victor, or (----). Same headers and same carburetor. I have stock CJ heads, stock BBM, stock Edelbrock, stock Survival, and several ported versions of those, as well as BT MR. I would be glad to supply the shortblock in either 468 CI, or 529 CI, and even several sets of ported heads, intakes, multiple carb intakes, etc. JBA headers, Hooker headers. Just need a bit of dyno time and someone who would help and document everything. Another book, anyone? Jay? Good comparison for your new heads! LOL Joe-JDC