If you are still looking for a dozer there is a all hydraulic D6 down your way that a guy is going to sell. It runs and other than that I don't know too much about it. If you are interested I can give you the guys contact info.
OK, the contact number is 218 380 3345, the person you, or your dad will be talking to is Roger. He is not the owner but is the contact for the owner. You may know the guy from either the ACMOC site or the Heavyequipment site as old iron habit.