587, Heavy Duty Trucks - Conventional Trucks w/ Sleeper, Cummins ISX15, Ultrashift, Like new 2011 loaded Peterbilt 587. The truck was used at the Eaton-Fuller headquarters as a demo truck for the ultra shift transmission., 450 Horse Power, Air Ride Suspension, Aluminum Wheels, 224 Wheel Base, 22.5, Tandem Axle, Ratio, 75