the buyers away in large numbers and by 1983, with the introduction of the One Ten, the Toyota Land Cruiser became the best-selling 4×4 in Australia. In the early 1980s, Land Rover Australia had made some changes to the vehicle to try to combat this sales decline. As well as the fitting of the V8 petrol engine in the 1979 "Stage One", as in the rest of the world, Australia also received the same vehicle with the option of a 3.9-litre four-cylinder Isuzu diesel engine (4BD1). This was introduced in 1982, and was meant to be equipped in about ten percent of the Australian production. Top speed is . This helped slow the sales decline, but the rest of the vehicle's shortcomings let it down. The One Ten was also available with this engine, and a turbocharged version producing in excess of powered the military 6×6. South Africa South Africa's relationship with Land Rover started in 1949 when the first series-I 80-inch models were sold in South Africa. In August 1950, Car Distributors Assembly (Pty) Ltd assembled the first Land Rover CKD in Port Elizabeth, South Africa. The first local production of fuel tanks and chassis at the Port Elizabeth plant was announced in August 1963 and from then on the local content in the production of Land Rovers increased steadily to 44% of vehicle weight by 1972. Local content included: chassis, road springs, entire body, tyres, seat frames and upholstery, battery, fibreglass roof and all glass. In 1974 Leyland SA had three assembly plants. Local content increased further in 1980 with the series-IIIS models fitted with locally produced petrol(R6) and diesel(ADE 236) engines. In 1992, the Blackheath factory in the Cape Province was identified as the largest Land Rover CKD assembly outside the United Kingdom. Military United Kingdom The British Army used series Land Rovers in large numbers (and continues to use the modern Defender versions). The British Army tested the series-I Land Rover almost as soon as it was launched in 1948. At that time, the Army was more interested in developing a specially designed military utility 4×4 (the Austin Champ). However, the Champ proved too complex, heavy and unreliable in battlefield conditions so the Army looked to the Land Rover. In the late 1940s the Ministry of Defence was keen on the standardisation of its vehicles and equipment. Part of this plan was to fit Rolls-Royce petrol