The 911R is a rare and little known beast ; back in 1967, plans began to evolve for a 'factory' race version of the 911.

While the 911S had enjoyed success in the hands of privateers and the occasional factory-backed competition effort, the 911R was to be an ultra-light weight version of the car that would improve Porsche's chances in competition.

The monocoque was made of the thinnest gauge steel possible, while fibreglass was used extensively replacing the bumpers and front and rear deck lids.

The doors and deck lids all had alumin i um hinges while the interior was stripped of all creature comforts and seats were replaced with Scheel racing bucket seats.

Side and rear windows were all replaced with Plexiglas and the floor boards were drilled and lightened.

The result was a 911 that weighed 450 pounds less than its production equivalent.

Attention did not stop with the body shell however, larger brake calipers, wider wheels and tyres, front and rear , were installed and the eng...