WC-55
The M6 37 mm Gun Motor Carriage (3/4-ton, 4x4) (or GMC), also known as M6 Fargo, and by Dodge as the WC-55 Truck, was a modified G-502 Dodge WC-52, designed and built to carry an M3A1 37mm antitank gun and shield, mounted on its cargo bed.
The WC-55 with gun combination was designated M6 Fargo Gun Motor Carriage with 37mm Anti-tank Gun, with supply catalog Standard Nomenclature List number (G-121).
A total of 5,380 were built by Fargo in 1942, but most were later dismantled / downgraded and returned to service as WC-52 cargo trucks.

Length: 14 ft 8½ in / 4,48 m
Height: 8 ft 2 in / 2,49 m to top of gun shield
Weight: 5,600 lb / 2 540 kg
Width: 7 ft 2 in / 2,18 m
Payload: 80 rounds 37mm
WC-55
The M6 37 mm Gun Motor Carriage (3/4-ton, 4x4) (or GMC), also known as M6 Fargo, and by Dodge as the WC-55 Truck, was a modified G-502 Dodge WC-52, designed and built to carry an M3A1 37mm antitank gun and shield, mounted on its cargo bed. The WC-55 with gun combination was designated M6 Fargo Gun Motor Carriage with 37mm Anti-tank Gun, with supply catalog Standard Nomenclature List number (G-121). A total of 5,380 were built by Fargo in 1942, but most were later dismantled / downgraded and returned to service as WC-52 cargo trucks.
Length: 14 ft 8½ in / 4,48 m
Height: 8 ft 2 in / 2,49 m to top of gun shield
Weight: 5,600 lb / 2 540 kg
Width: 7 ft 2 in / 2,18 m
Payload: 80 rounds 37mm
Dodge WC series