Thanks guys. I really love this bike, I just don't know too much about it yet. The bike isn't in front of me right now, but I know the motor prefix is BB34.A. with H.C. stamped right by the vin, and the frame is BB32S. Trans is stamped "CR1" I have a Goldstar book that confirms both numbers as 1953 and curiously they both end in "40"- maybe just a coincidence. I don't know what crank is in it, but a few Goldstar guys have said the motor (and frame) is Goldstar from top to bottom, except the VIN. I guess even the head is the same. When I got it, it had telescopic forks with no headlight ears on the covers, and a 7" brake. It has a 10TT9 on it now, but it had a 289. If anyone can share anything else about this machine, I would be very appreciative. Also, the magdyno seems to be on the fritz, and I have one I removed from an M21- will it work?