60 Inch Mid-Roof XT Sleeper, Detroit DD13 Engine, 450 H.P., Engine Brake, DT12 Transmission, (Automatic), 40,000 Lb. Rear Ends, 3.23 Ratio, Air Ride Suspension, Hydraulic Power Steering, Air Conditioned, Deer Guard, Dual Aluminum Fuel Tanks, Horizontal Exhaust, Exterior Visor, Roof Air Fairing, Cab Extenders, Quarter Fenders, Bunk Heater, Tilt And Telescoping Steering Wheel, Cruise Control, Power Windows, Air Slide 5th, 226 Inch Wheel Base, 11R22.5 Disc Wheels, Aluminum Discs Front And Outside Rear.