Mack Trucks E7-427 Diesel 427 hp Engine, 1997 US EPA Label, Mack 13-Speed Manual Transmission, 5443 kg Front Axle, 17236 kg Rears, 22697.0 kg GVWR, Air Ride Cab, Aluminum Wheels, 11R22.5 Front Tires, 11R22.5 Rear Tires, Hendrickson Air Ride Suspension, 223 in Wheelbase, Western Industries 20 ft Long Steel Body, Manual Roll Tarp, Split Swing Tailgate, Tailgate Chute