This transmission was offered on Ford models Falcon, Fairlane, and Galaxie, Mercury models Comet, and Meteor and Edsel cars with differences in the torque converter, valve bodies and clutch plates to accommodate differing engine torques. In 1966, Ford introduced the C6 automatic, which left them with three heavy-duty automatic transmissions and crowded conditions at Livonia Transmission plant. Ford decided to combine the best attributes of the MX and FX transmissions and ended up with an improved version of the "X" called "FMX." This transmission used the stronger MX-type rotating parts in the smaller FX style case. This cut down on both weight and the number of transmission components Ford needed to make. This transmission was manufactured at the Fairfax Transmission Plant, freeing up capacity at Livonia for the new C6. The FMX was manufactured from 1968 to 1979, when the Fairfax Transmission plant was closed. Although the FMX was phased out in the United States in 1979 in favor of Ford's then-revolutionary Automatic OverDrive (AOD) transmission, the FMX was sold for another four years for use in V8 Ford Falcons built in Australia. The FMX ceased production when Ford Australia phased out the V8 engine in 1983. In 1962, Ford began working on a new type of automatic transmission to emphasize fuel economy and driveability. The new transmission was built around the Ravigneaux planetary of the "X" transmissions. Where many transmissions had a fourth gear added as an afterthought, Ford's new transmission was designed with a fourth gear already integrated into the gearset. Because it was based on the X transmissions, its gear ratios from 1-3 were the same, with the fourth being .67:1. The transmission featured a split-torque application for third gear, as well as a lockup in the torque converter. The project was shelved with a design that initially lacked a dampener in the torque converter, but after the project was revisited, a dampener ultimately made its way into the final design before Job 1. The XT-LOD was initially abandoned in 1966, but revisited in 1974 as a result of rising gas prices. The transmission was introduced when Ford downsized its full size line for 1979. Initially called XT-LOD (Extension Lock-Up Overdrive), its name was changed when revisited in 1974 to FIOD (Ford Integrated Overdrive) and then to its final name in 1979, the Ford AOD transmission. Despite the Cold War, the Soviet Union, in developing its automotive industry, would often base its products on western technology, from whom it would either purchase a full licence (the GAZ factory was designed by the Ford Motor Company, later the infamous Lada factory would be built by Fiat etc.) or make an indigenous copy by reverse engineering.