Theres a few members in here that have experience in the BBK area. I recently was going to do a 734 kit, but after talking with a few members I decided instead to just go with a 11:1 CP-Carrillo High Compression Piston in the stock bore, mostly for simplicity and reliability sakes, also with wet clutch slugs and a gold spring. I didn't want the over heating issues or to have to work on my grizzly every other ride.