Thanks. I am looking for the rear sprocket kit assembly. I have built and restored a number of automobiles over the years. (muscle cars) Building a 68 Nova Drag car now with my youngest (25 yrs. old) son. Putting a mower engine on a bike can't be that difficult. Maybe I'll just put the drag car motor on that bike instead!!! I'll try to get to El Dorado. Thanks for that lead!!