friends motor

A friend wants to build a 360 and is looking for 430-450 horsepower to the rear wheels..what would he need if he used the RHS 360x heads and a stock stroke 3.58

I'm building a 360 right now with Batten W2 style heads and mild roller cam, 10.5:1 that should make 530HP at the crank. It's for sale, so if he's interested have him give me a call!
Brian