If you have the time. Maybe make this tractor. The Ford 8401 
Built in Australia from 1980-1985 this thing is quite rare as well. Only between 720-730 built. It also has a TW-20 engine with later ones having an 8L I-6 Ford diesel engine and later ones had a red stripe as well. also maybe you should give it wheel options like rear singles rear duals MFWD (not real btw) with options for singles rear duals and front and rearduals