I am just an old farmer with very few toolsa good welder and metal cutting b and saw. The wheel model Waterloo built in 1976 used a J.D. combine engine and all new steel. I built the wheels from scratch. The transmission was an A Ford. It runs super and has been shown in several states. The Dozer was built from 12 A J.D. combine engine in 1982. It weighs in at about 1700 lbs., has 7 inch pads. It runs and performs like a champ. I formed all the sprockets and drive rollers for it. It never fails to get lookers at shows.