Thanks for the tips, Mat Man. The bike came with Shimano hardware (except for shifter which was a Sram MRX-7), but am open to Sun products if they're better. Took it out for a spin and broke the master link on the 415 main drive chain. Might have miss-installed due to excitement over getting finished. Replaced it and took another test drive. I think I'll ride as a single speed for a while and tweak everything. The frame has already been widened quite a bit to accommodate the OCC wheel. Don't know if I can squeeze any more space for freewheel without throwing everything out of whack or compromising the frame. Took a section of exhaust out to shorten pipe. Looks much better. The bike has plenty of power with the 79, a 212 would be overkill at this point unless I wanted to race( been there, done that, over it). After all, it is a motorized bicycle.