Dub9Stang

I got a problem. The cylinder heads im getting are the 72cc kaase p51 heads. The problem is that all of the high hp rated crank kits are for 7cc4, 86cc, and 100cc. im pretty set on the p51 heads. Anyone know of any dominator crank kits rated for at least 900 hp?
Or, if it is the only option to switch heads, what are some heads that are as good or better than the p51s?

The engine is a 545 stroker (460 block), pure drag car.