AM General 6x6 Tractor Unit Truck Tractor, mileage 16,523, year 1991, - Engine Cummins 6 Cylinder 8.3 Turbo, Diesel Engine, producing 250 hp (180 kW) at 2100rpm and 685 lbf·ft (929 N·m) at 1500rpm driving through an Allison MT654 5spd Automatic Transmission and two-speed Rockwell Transfer...