auto or stick? what gear? for a general all around combo I'd use 10:1 flat tops (if they arte out there) you might have to ge w/ TRW fordged 6 pack pistons. If you have a GOOD set of 915's use them. If you are starting w/ core heads you should check online for used iron heads or just shell out the $$$ for some aluminum heads. That said all the usual goodies like, good electronic ingnition, headers, timing chain-gear set. I'd probably try a split duration cam with a 110 or better centerline. Depending on you gear/trans selection and stall/4 speed you can pick the size that fits best.