Stainless1: I'll add the 1000 head to the mix, very good to know.
Larry/Stainless1:
Thank you both for the contact suggestions.
For land speed I don't see any engine as state of the art. The rods, cams, valves, valve springs, and pistons are wrong for peak horsepower over a limited time period. There are often cooling problems too (hot spots that can limit power).
All this is for a back of the napkin engineering study to find the engine most adaptable to a series of modifications. I'm just starting to open this can of worms to look inside. SCCA, AMA, and AFM put much stricter limits on engine modifications.