Hey guys I have a 520 with P-51 Heads that was built as a moderate motor for my 4x4 10.9 comp JE pistons hawks racing crank, scat rods, comp 306s flat tappet. I am wanting to go through it this coming winter and set it up for my 2 wheel drive, so I want to go with a roller cam to get some more HP. Will that crankshaft hold up in a racing application?? Also my pistons were actually for Blue Thunder heads and the piston to valve is fine now but im worried with a bigger cam it wont be. Any suggestions on what crank and pistons would be great. Also for a cam??? I talked to kasse about one but always like other opinions.