Vic Elford, supported by David Stone, 1968 Rallye Monte-Carlo.
More and more privateer racers were choosing the 911 as their weapon of choice for racing and Porsche was taking notice. They started developing more sporting versions such as the 911 RS, and were met with more successes.
For 1973, they decided to use the knowledge acquired building their race cars and apply it to the 911.
Swiss race driver Herbert Müller, teamed up with Gijs van Lennep, won the 1973 Targa Florio driving a Porsche 911 Carrera RSR.
The result was the 911 Carrera RSR, which was met with great success in its first year.
1973 24 Hours of Daytona-winning Brumos Porsche 911 Carrera RSR of Peter Gregg and Hurley Haywood.
The RSR came in 4th overall at the 24 heures du Mans, and was 1st overall in the 12 Hours of Sebring, the Targa Florio and the 24 Hours of Daytona!
The huge success of the Carrera RSR pointed the way for Porsche, and lead to the development of the RSR Turbo, the 934, and the 935, all in turn successful racers.