I built one when I was a kid going to school (almost 50 years ago). The frame was from a 1950 Chev sedan, the power train was from a Morris Oxford (4 cylinder, 4 speed), and the front axle was an inverted I-beam from a Morris Ten. I wanted my father to spring for a 3-ton truck rear end, but he never did. The rear axle was upside down so the spring rests would easily bolt to the frame (no welder then), hence 1 speed forward and 4 reverse. All the tires were bald, so father found a couple of larger size snow tires, cut the beads out of them and mounted them over the bald tires on the drive axle. That worked pretty well except when dirt got in between the 2 tires...then the inner tire could spin inside the outer tire. It worked well pulling a (horse drawn) mower, dump rake and trailer. I called it the Hoyt-Clagwell. Wish I had a picture of it.