1981 KENWORTH W-900 Conventional, 42 Inch Flat-Top Sleeper, Cummins NTC-855 Big Cam Engine, 480 H.P., Engine Brake, 10 Speed Transmission, (Manual), 40,000 Lb. Rear Ends, 3.08 Ratio, Air Ride Suspension, Hydraulic Power Steering, Air Conditioned, Chrome Bumper, Dual Aluminum Fuel Tanks, Dual Chrome Stacks, Dual Stainless Steel Air Cleaners, Stainless Steel Exterior Visor, Stainless Steel Half Fenders, Custom Interior, Tilt And Telescoping Steering Wheel, Adjustable 5th, 249 Inch Wheel Base, 11R24.5 Aluminum Disc Wheels.