Will a 55cc engine work on a 22in chopper frame? (not quite a schwinn stingray but a knock off) How wide are some of these engines? and where could i get a 55cc 60cc or a 70cc engine that could come to the US? Some weirdo law says no more 2 strokes! any help much appreicated I was hoping for a Skyhawk 60cc will this be an adequate engine?