Cat 3406 6 Cylinder Diesel 310 hp Engine, Engine Brake, Eaton Fuller 9-Speed Manual Transmission, 11R22.5 Front Tires, 11R22.5 Rear Tires, Air Ride Suspension, 216 in Wheelbase, 20 ft x 96 in Bed

Cummins 6 Cylinder 8.3 L Diesel Engine, US EPA Label, Engine Brake, Eaton Fuller 10-Speed Manual Transmission, 5433 kg Front Axle, 9979 kg Rears, 15422 kg GVWR, 11R22.5 Front Tires, 11R22.5 Rear Tires, Air Ride Suspension, 272 in Wheelbase, 21 ft 6 in x 96 in Bed, Pintle Hitch

Cummins ISC 6 Cylinder Diesel 315 hp Engine, Eaton Fuller Manual Transmission, Differential Lock, 10432 lb Front Axle, 46000 lb Rears, 60000 lb GVWR, Air Ride Cab, 11R22.5 Front Tires, 11R22.5 Rear Tires, Double Frame, Chalmers Rubber Suspension, 210 in Wheelbase, 20 ft x 96 in Bed, Ringfeder