The rear part is a early yamaha dirt bike gas tank cut up. The bike was on craigs list but the add said it was also listed on ebay. When i looked no one had bid yet so i emailed the guy and offered his craigs list price pending comformation with my wife lol. When i went back on ebay there was now a bid...crap i thought. 10 more minutes later it met reserve. I thought for sure the guy would let ebay play out. But he let me have it for the craigs list price and even delivered it from NH. It will be at the speed runs next year!!