Good luck finding one. Also, the cases are line bored. Which means, after they are cast, they are bolted together and then machine together as a matching set. They are not designed to be interchangeable. So you really need a complete set.
What happen? Your chain come off and break your old one or something?
yea my chain loosened up when i was riding n got jammed up under the shifter n cracked my crank case. im just thinking about just getting a bottom half of the motor n i will still b able to use the top from my motor its prob easier doing it that way