4W73. The name as per Indian army records is an acronym for Jabalpur Ordinance aNd Guncarriage Assembly. Both the Nissan vehicles were fitted with the same engines and shared many parts. The Jonga was briefly sold to civilian customers with a 4.0-litre Hino diesel engine in 1996, but demand was low, due to an uncompetitive price, as well as unappealing looks. Less than 200 units were sold. The Jonga served faithfully until the late 1990s, when it was replaced by the lighter Mahindra and Mahindra MM550. Auctioned ex-Army Jongas, stretched and converted to people carriers, still serve in some rural areas of India. Third generation (160; 1980) The 160 series was introduced in 1980 to replace the 60 series. In Australia, these are sold as the MQ Patrol. In 1980, the available engines were the L28, P40, and SD33. All models were available with a four-speed manual transmission, while a three-speed automatic was optional on long-wheelbase vehicles fitted with the L28 engine. All 160 series Patrols came with a two-speed offset transfer case, which featured a 1:1 high gear and a low gear. All models had leaf -spring suspension. The SD33 vehicles feature 24-volt electronics. Different trim options and colors were available, with options including vinyl or carpet floors and blue or brown interior trim. Air conditioning and power steering were available on deluxe models. The front differential in all models was C200. In Australia, the standard rear differential was the H233. Some versions featured limited slip differentials. A heavy-duty model rear differential was used in some pickup trucks and P40-engined wagons. This was the H260 model differential. In European markets, where less onerous off-road use was expected, the light-duty C200 rear differential was installed in some vehicles. In 1983, the MQ was updated as MK Patrol, but this does not appear on any Nissan literature or service manuals. Nissan parts dealers do not recognise these initials. Updates included a revised front end with rectangular headlights and an upgraded front suspension. The four-speed gearbox was revised and a fifth gear was added for most models. The four-speed was still used in some lower specificationed units, presumably to run out stock. A high roof ("Super Roof") version of the wagon was added at the same time along with the SD33T turbo-diesel option. With , the turbodiesel can reach . The naturally aspirated SD33 diesel engine was updated at this time. Revisions