Introduced for model years 1978 to 1983, the Porsche 911SC represented an important evolution from the Carrera 2.7 in the form of an aluminum engine. Displacement was increased to 3.0-litres, and it featured Bosch K-Jetronic fuel injection and a 5-speed 915 transmission. Originally power output was 180 PS (130 kW; 180 hp), later 191 PS (140 kW; 188 hp) and then in 1981 it was increased to 204 PS (150 kW; 201 hp). "SC" stood for "Super Carrera". Although the Coupe and Targa versions existed early on, the Cabriolet version was made available only until 1982 for the 1983 model year. Worth noting that many 911 SC's have undergone significant body and mechanical modifications. These cars can be found in the 911 SC Custom market. The SC was discontinued with the introduction of the Carrera 3.2 in 1984.