Is this street? Strip? Street & strip? What gearing, tire size and ballpark duration are we talking. There's so many aftermarket alum. big block Mopar cylinder heads out there that your question of "Best" could mean many things to different folks.

I got the Indy EZ heads due to once yur gonna spend for aftermarket why go just better than OEM?

And it was suggested to me, that the 470, offset ground crank, BBC rod journal was the max//best due to the wristpin crowding the oilring with anything bigger than that. Has that changed in the last few years?

And then there's the deed of fortifying the lower end to go bigger crankthrow. Or maybe it should be so you don't throw the crank.