I bought this a few years back on ebay, had a problem, wouldn't shift past 2nd gear. The Buell "experts" told me a simple fix, it was just the shift pawl. Not the case, the real problem was a bent shift fork. If you want photos just ask, I have plenty of engine apart photos I can post here. But, yeah, the Blast is powered by a modified 1 cylinder Sportster engine. When it's apart you can see where bits go to mkae it a twin. Yeah, it's little, but a fun to ride. Here is a photo. I also have a "CityX" along with my three HD's.