The M39 series was the primary heavy truck of the US Army and USMC forces during the Vietnam War, and was also used by the US Navy, US Air Force, and ARVN forces. The M54 was the standard cargo version of the series. This kit comes with optional driver, cabin canvas or hard top, M2HB HMG with ring mount, seat bench, and rear trunk tarpaulin top; also with open or closed tailgate.