2003 PETERBILT Model 379 Ultracab Extended Hood Conventional, 63 Inch Unibilt Stand-Up Sleeper, Cummins ISX Engine, 475 H.P., Engine Brake, 10 Speed Transmission, 40,000 Lb. Rear Ends, Full Screw, 3.70 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, Aluminum Half Fenders, Air Ride Cab, American Class Interior, AM/FM Radio, Compact Disc Player, Tilt And Telescoping Steering Wheel, Cruise Control, Full Instrumentation Panel, Power Mirrors, Power Windows, Dual High Back Air Ride Seats, Engine Block Heater, Air Dryer, Tool Box, Air Slide 5th, 262 Inch Wheel Base, 11R22.5 Aluminum Disc Wheels. XST