I just bought a very slightly used 2005 Cooper II, 125cc. My first Pit Bike, and it's a blast. I would like to know what fits it... I need to re-gear it, so what sprockets fit? Do many parts for the Honda 50s fit? Plastic? Decals? What exhaust? Brake pads and shoes? Gas Cap, billet? It's kind of hard with no manuals or listings for xtreme in catalogs. I would appreciate any help. Thanks!