Markus you must have EVERY ad for every Cool toy I wanted as a kid. I wish this one had the cool paint, but it was long gone before I picked it up for my son in about 1991. I found another newer Tecumseh ohv Enduro 5 horse in the basement. I might go with it or there is the harbor freight 6.5 that is coming out of the Bird mini bike you identified for me. I found a Tecumseh hs50 that will end up in the Bird with a proper belt like the ad you sent me. Thanks again for that!!! Good eye Golden Pinto. No one builds a go kart frame like harbor freight. But with the engine behind the rear wheels it takes 50-70 lbs to keep the front wheels on the ground. Without the weights it is a wheely kart. Lots of fun but doesn't steer worth a darn. This was mach up, ended up hanging the weights off the front end.