When Ford offered to increase the displacement and power of the tractor engine in their GP model, the government declined and insisted that Ford produce jeeps identical to the Willys, both for the much stronger engine, and for complete commonality/interchangeability of the components. Willys received no license fees, and Ford complied. The Ford was designated "GPW", with the "W" indicating the "Willys" licensed design and engine. Ford retooled at a cost of $4 million to build Willys engines and produced the first GPW as quickly as 2 January 1942. Just days before, in late December 1941, the Quartermaster Corps had ordered another 63,146 GPWs. One extra condition to Ford's jeep orders was to manufacture them in several different Ford assembly plants, in addition to Ford's primary 'River Rouge' plant in Dearborn (Michigan). The QC expressly demanded Ford decentralize their jeep manufacturing to facilitate the Army's logistics, shipping from all three coasts. Besides Dearborn, Ford also assembled jeeps in their Louisville, Chester (Pennsylvania), Dallas (Texas), and Richmond (California) plants. Ford's Edgewater (New Jersey) plant also built jeeps in the first four months of 1943. During World War II, Willys produced 363,000 Jeeps and Ford some 280,000. Some 50,000 were exported to the USSR under the Lend-Lease program. Ford's assembly across plants distributed as: River Rouge 21,559; Dallas and Louisville almost tied at 93,748 and 93,364 units respectively; Chester 18,533, and Edgewater just 1,333 units. Bantam stopped further jeep production and made two-wheel jeep trailers. This was sufficient to keep the firm going until it was taken over in 1956. Ford built jeeps with functionally interchangeable parts and components, in part facilitated by using components from common sources: frames from Midland Steel, wheels from Kelsey-Hayes, and axles and transfer cases from Spicer. However, Ford had replaced the welded grate front grille by a single pressed/stamped sheet steel part, with nine vertical open slots to ventilate the radiator, and circular openings in front of the lights, to simplify production, and save costs. Willys also adopted this in their production of the MB after unit 25,808. Predictably, there were still many minor differences; the Ford chassis had an inverted U-shaped front cross member instead of a tubular bar, and a Ford script letter "F" was stamped onto many small parts. Many body detail differences remained for as long as January 1944, when a composite body, fabricated by American Central, was finally agreed upon by