The 1975 Porsche 911 Turbo was a 2 door coupe-bodied car with a rear mounted engine supplying power to the rear wheels. It was powered by a dry sump turbocharged engine of 3 liters capacity. It featured single overhead camshaft valve gear, 6 cylinder layout, and 2 valves per cylinder.
The 1968 911 was the last year for the original short wheelbase 911, and was also when the odd semi-automatic Sportomatic transmission was introduced. You still had to shift, but the clutch was MIA.
The 1967 911 saw its first major change with the introduction of the semi-open "Targa" model, which in addition to a lift-off roof came initially with a soft, folding rear window. Many ended up being replaced with glass windows, therefore the "soft" Targas are quite rare and valuable today.
Also in 1966, the more powerful 911S model was introduced that raised power to 158 hp. Alloy wheels from Fuchs were offered for the first time and shaved 20 lbs from the 911's weight.