6:1 reduction gearbox

[txluke]

I picked up a quarter midget racing kart that was taken apart for $40. It has a honda gx120 with a splined shaft and a 6:1 gearbox. The motor was in excellent shape. It had the governor removed. I took it apart and the inside was clean as a whistle. The reason he sold the kart so cheap was because it was not able to start until he took the chain off. I knew it was a direct drive so I had no problem buying it. I have a few projects and so many motors that I can put this one away until I have the perfect project for it. Any suggestions? (The only pic of engine was with this big *** exhaust sitting on it)