I am looking for an 80cc bicycle engine kit online for around $200 - $250. I have seen many brands of engines with kit that all look identical. Some of the engines ive seen are: -SD Stinger -Grubee -Mega Motors -Flying Horse The engine needs to be EPA approved, and something that will last a while and not easily break down. I am looking for quality, preferably something not chinese made if possible. Anyone know which brand above or not-listed is the best? thanks!