Decided to check out craigslist from work just before coming home and I found an ad for a lightly used complete 66cc motor kit for only $60 and it was only about 2 miles away.
Looking this thing over there are a lot more differences in kits then I realized. The tank in this kit is huge compared to my original BGF kit and the chain seems heavier then the #41 chain I upgraded to.
Other cool thing is the studs on this tank are 6mm where the ones on my tank are tiny. Also there's no cable stop for the clutch cable, it's built into the clutch arm.
Guess there's no more excuses, gotta build another bike now.