Back in 1975 the Porsche 911 Turbo was the esteemed German car maker's first turbo engine road car, with a KKK turbocharger and horizontally-opposed six-cylinder 3-liter engine providing 260hp. From 1978 that became a 3.3-liter powerplant with 300hp and the car became more pronounced visually, with cues such as a prominent rear wing and wider tires.