Hey guys, I know I ain't been active in a while. Been busy on a bunch of other crap. Anyways, I was browsing around amazon a while back, and found the Lifan engine mentioned in the title, and more recently, found the puma for less than $300. Now, I'm mentioning these two items together because I figured that frame would not only fit, but also reliably handle this engine, and this two cylinder monster can also be a self contained power source for lights, having an integrated 12v charging system built into the stator. It has a built in 5 speed tranny, and that, combined with a 38t direct drive sprocket, should make for a pretty badass ride. Everything the bike would need, minus running lights, drive gear, and the engine mount, is there, and ready to use. Has anyone already done this one, or is it still waiting to be tested?