In 1942, the payload was uprated, and the trucks grew into the G-502 ​⁄-ton 4×4 Truck (Dodge) and the G-507 1​⁄‑ton 6x6 personnel and cargo truck (Dodge) — confusingly retaining the Dodge WC model code. Although the ​⁄‑tons featured significant design improvements, they did retain some 80% interchangeable components and service parts with the ​⁄‑ton models — a vital Army requirement, for field maintenance and operability of the trucks.