24 Hours of Le Mans: Jo Siffert / Colin Davis, Porsche System Engineering, Porsche 906/6 Carrera 6 Langheck, leads Ken Miles / Denis Hulme, Shelby American Inc., Ford Mk II.
Jo Siffert / Colin Davis, Porsche System Engineering, Porsche 906/6 Carrera 6 Langheck, leads Ken Miles / Denis Hulme, Shelby American Inc., Ford Mk II.