622,683 miles, 4,137 hrs., tandem axle day cab, Paccar MX, 455 hp., performance enhanced, Eaton Fuller UltraShift automatic, diff lock, air ride cab, 12,000 lb. front, DSP41 35,000 lb. rear, 3.70 gear ratio, 188" WB, 8-bag air ride susp., 11R22.5 fronts, 295/75R22.5 rears, aluminum outside