Since we have a couple of old Farmall M's that we use regularly and I thought there may be someone else who is a fan of the old M, check out the following link with a copy and paste:. A Farmall M with a 4wd? http://forums.yesterdaystractors.com/trforum/viewtopic.php?p=2057162&sid=341e07be17c2394c9325388cf8026915