Hmmm thanks hank something to consider, I was planning on change my trans at some point-even considering a manual gearbox, I have an old 3 speed from something or other, I hadn't really even considered changing rear gears, I'm not really looking for low drag numbers just a little easier on the wallet-for now,I am thinking of using a 200c My cousin has laying around, it has no OD but it does have the extra gear and the lock up. That trans should be more than fine for my meager power.