About the only parts that aren't "Hemi specific" would be the water closet/pump, timing cover, and oil pan, but the "Hemi" oil pan was deeper I think (7 qts?)...You COULD swap in the 440 crank,(PROVIDING IT'S A STEEL CRANK, and NOT cast) as long as you don't have a problem with a Hemi with a 6 bolt crank in it then...(Hemi crank was the same cept it had 8 bolts holding the flywheel/flex plate on)..Also, the 440 balancer could be run on the 440 crank, but those heavy "Hemi rods" would require a RE balance of the lower end..