Once its life as a race car was over, 917 chassis 030 was brought back to the Porsche factory for transformation into Count Rossi's personal street-legal 5-liter flat-twelve rocket ship.

At this year's 2019 Goodwood Festival of Speed, we snapped the oily details of Count Rossi's street-legal 1971 Porsche 917K.

Commissioned by Roger Penske, the 963 RSP evokes the streetable 917 that Porsche built for Count Rossi 50 years ago.

At this year's 2019 Goodwood Festival of Speed, we snapped the oily details of Count Rossi's street-legal 1971 Porsche 917K.