I just got a 48cc kit. I meant to bid on a 66/80, but I wasn't paying attention, and accidentally won this one. So I'll have to be satisfied with it. Haven't got a bike to put it on yet, but I'm looking at the Schwinn Landmark from Walmart. I was originally going to do a coaster brake bike, but reading the horror story thread here, I convinced myself otherwise.
Wish me luck!