When the Porsche 911 Turbo Carrera was introduced in 1974 it represented something new from the German automaker: its first true production supercar.

Although it was immediately identifiable as a 911, the 930-coded car, as it was internally designated, featured a 3.0-litre flat-six engine boasting a single KKK turbocharger with Bosch K-Jetronic fuel injection.

Weighing around a mere 1,200 kilograms, the 930 could sprint to 100 km/h in just over five seconds on its way to a 240 km/h top speed.

The 911 Turbo Coupé was equipped as standard with a long list of equipment that bolstered comfort and convenience, including air conditioning, full leather seats, rear wiper, headlight washers, and a stereo.

Further options, including a power sunroof, were also available.

In 1978, Porsche updated the model with a larger 3.3-litre engine with a power output of 253 horsepower (for the US market), an air-to-air intercooler, revised suspension, and new brakes.

The American market was highly impo...