Are you using headers or manifolds with this eng ? I agree with using the lighter LY rods and shooting for zero deck and .039 quench. Myself if I was using headers I would go for a little more cam like maybe step up to the MP .557. Nothing wrong with the .528 in the right combo but if you use exh manifolds and your combo I am not so sure you will be making 500 hp but should be close at the least. Myself I would use the headers and get the extra hp. Good luck , Ron