 American Bantam, the creators of the first Jeep, built approximately 2,700 of them to the BRC-40 design, but spent the rest of the war building heavy-duty trailers for the Army.Final production version Jeeps built by Willys-Overland were the Model MB, while those built by Ford were the Model GPW ("G"=government vehicle, "P" designated the 80" wheelbase, and "W" = the Willys engine design).There were subtle differences between the two.