1979 John Deere 8640 4WD, 3 Pioneer Hyd Outlets, Pto, 12,093 Hrs. 50 Series Engine! 20.8-38 Duals, Quad Range Trans. New Seals In Pto, plus much more work. Runs Very Good, Clean Tractor!! Seller Updated & Doesn't Use Anymore, S/N:8640H002558R, To View / Info: James 605-290-9783 Or UA Rep: Brent 701-329-1838 Located: Herreid SD