with a clone, you get 1.5 more H.P. Will run on the crap fuel we have to work with, bike isn't a hallowed "collectable", its made in China anyway. You can keep it stock, or can buy aftermarket parts to upgrade as you go along. Got no beef with any other motor you can put in one, but a clone will get you going. Probably more members have a bike with this setup than anything else.