The track chains will fit the S/PS Thirty, L/PL Twenty, Thirty Fives Diesel and gas, Twenty Five, Twenty Eight, R3 and maybe a couple of others with a few links removed here or there. The undercarriage will move up to the Forties or the RD6/D6 tractors. I have one good front idler yoke left and two ok front idlers left. I do not know if I would take that project on.
THanks
Ken