I have a 1983 CR125 with typical corrosion issues for an early 80's water-cooled CR. Since I can't get the parts for the bike, I thought I'd check out other options beyond trying to repair the motor. Sad thing is, this bike is in great condition and I'd hate to see it just sit there for another 4 years. So... have any of you ever swapped the motor on these bikes? I don't even know what would fit, but thought an old ATC motor might work. Anyone have any ideas? I told my mechanic buddy I want to turn it into a Frankenbike if I can't get it running soon.