GM V8 8.1 L Liquid Propane Gas (LPG) Engine, Air Conditioner, Allison Automatic Transmission, 12000 lb Front Axle, 21000 lb Rears, 33000 lb GVWR, 11R22.5 Front Tires, 11R22.5 Rear Tires, Spring Suspension, 210 in Wheelbase, PTO, 1979 Arrow Steel Tank, PTO Driven Pump, 1 Reels