W900L, Heavy Duty Trucks - Conventional Trucks w/ Sleeper, Caterpillar C15, 13 Spd, 1999 Kenworth W900 Single Bunk Studio Sleeper C15 Engine 13 Speed Transmission 355 Gears Sleeper Big Bunk 63'' 600k miles on Cat Rebuild 500k miles on Transmission 200k miles on Rear Ends 1.8 million original miles, 475 Horse Power, Suspension, Wheels, 260 Wheel Base, , Tandem Axle, Ratio, 63