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Revealed at the 1972 Paris Auto Show, the Carrera 2.7 RS was a special model used to homologate modified versions of the 911 in Group 4 racing. Developed from the 911S, the 2.7 was more potent in almost every area.

One major improvement was the 2.7's reduced weight, it used thinner gauge steel on most panels, thinner glass, fiberglass bumpers and fiberglass engine cover. The body was also widened to accommodate larger Fuchs wheels and the deck lid sported a new signature ducktail rear wing.

With the use of a Nikasil coating on the cylinder walls, the 2.4S unit could be bored out to a capacity of 2687 cc, but the standard valve train was retained. At the time, this became the largest engine available on a Porsche and was good for 210bhp at 6300rpm. And with a taller 4th and 5th gear, the top speed was increased to 152mph.

Initial production for the 2.7 was only 500 cars and it sold out almost immediately. Three versions were available, including a lightweight Sports trim, Race Trim or more opulent Touring trim for the road. The lightweight version was 100 lbs lighter with the absence of underseal, electric windows, basic door panels and other small amenities.

With an excellent gear change, ample power, precise brakes, responsive handling and versatility both on an off track, the 2.7 RS was the Porsche to have. As one of the best sport cars of the seventies, every serious Porsche collection needs a 2.7.