Isuzu 6HK1-TC 7.8 L Ultra Low Sulfur Diesel Engine, Air Conditioner, Cruise Control, 6-Speed Manual Transmission, 12000 lb Front Axle, 21000 lb Rears, 33000 lb GVWR, 11R22.5 Front Tires, 11R22.5 Rear Tires, Spring Suspension, 273 in Wheelbase, 22 ft x 96 in Bed