1999 Mack RD690S Dump Truck EM7 Mack Engine 300 HP, Maxitorque Transmission T2080, 8 Speed, Walking Beam Suspension 20K lbs Front Axle, 44K lbs Tandem Axle, A/C, 221K Miles, New Dump System including New PTO, New Pump, New Piston, And New 16 meters/22 yards Dump Body with Electric Tarp And Air Operated Rear Door.