OK LURCH, we can get back on subject now. I would advise purchase of the Torquers, based on dis-assembly and magnafluxing them for cracks. When you can post the piston deck height and head cc's, I'll try to help you further. If you do disassemble them and magnaflux them (highly recommended), leave them disassembled and measure the valve spring seat size. You'll want to find a set of old, stock, worn-out springs to use in breaking in the cam, then change the springs out after that to the springs recommended by the cam grinder for whatever cam you decide on.