Actually, I'd love to have the engine, carbs, and wiring harness. Seriously - I still want to make my own chopper with a full, custom frame, springer front, phat tire rear, and something similar to the old Amen Savior frame's rear suspension (I'd have to have rear springs). I would never "wreck" one of the older, more rare 70~73 models - but these were made for 13 years and over 640,000 sold and the later ones are everywhere. The 650 Yamaha twin is one of the most symetrical and perfect motors that it's easy to showcase one in the "center" of a chopper frame. Chrome it up, polish it up, and there is no oil tank and the electrics can all be easily hidden away. They are torquey and they make plenty of power for an ill-handling bike - perfect application!
I was going to do this to the CB750 K4 I recently restored/hotrodded before deciding to make a period hotrod.
Yep, I'll gladly buy it from you as-is.
Gordon
PM or mail please
Of course, if the tractor's engine goes out --