Cummins ISB 6 Cylinder 6.7 L Diesel 305 hp Engine, 2008 US EPA Label, Automatic Transmission, 7000 lb Front Axle, 12000 lb Rears, 15000 lb GVWR, 225/70R19.5, Spring Suspension, 170 in Wheelbase, 13 ft x 96 in Bed