In 1974 Porsche introduced the first production turbocharged 911. Although called simply Porsche 911 Turbo in Europe, it was marketed as Porsche 930 in North America. It was visually unique with wide wheel-arches, bigger wheels and tires and a large rear “whale tail” spoiler. Starting out with a 3.0 L engine with 260 hp, it rose to 3.3 L and 300 hp for 1978. Only in 1989, its last year of production, was the 930 equipped with a five-speed gearbox. The 930 was replaced in 1990 with a 964 version featuring the same 3.3 L engine. There have been turbocharged variants of each subsequent generation of 911.