I am building a Desoto hemi for my 67 Valinat right now. I do have a 225 I'd like to play with later. Diamond Pistons makes some good slugs and also has chromoly H-beam rods for the 225 which would really make it bullet proof. The mains on the crank are as big as a 440 so it should work well. Adding a set of bottom end studs should finish it off. Shouldn't break the bank either. Bill