The M543 Truck, Wrecker, 5 ton, 6x6 is part of the G-744 (or M-39) series of 5 ton 6x6 trucks. Details of the history, model numbers, and configurations of the M39-series of trucks are on the linked page. The M543 Wrecker and the M62 Wrecker are identical trucks that differ only in design variations in their wrecker crane equipment.
M543 Truck, Wrecker, 5 ton, 6x6 during Exercise Team Spirit '84, S. Korea, 20 March 1984. An M-151 jeep is in the background.
M543 Truck, Wrecker, 5 ton, 6x6 on railroad loading ramp, Ft. Hood, TX, 15 August 1984.