you can use a belt from a semi tractor engine to power it. I beleive the belt is 2x40". The orginal engine would have been a Z briggs. The colors were all red, but the wheels, they would have been green. Steel one would be correct, 22" rubber was the option, and is hard to find now. Wheel weights are not easy to find either.
Some where in the last few weeks was a guy from OK, who was selling a tractor with good 22" wheels and rubber, i"d check that out.