A second car was available for German Rolf Stommelen for Spain .
The German retired with fuel pressure failure and Surtees finished 11th , At the Monaco Grand Prix Rolf Stommelen finished sixth and Surtees seventh .
A second car was available for German Rolf Stommelen for Spain but the German retired with fuel pressure failure and Surtees finished 11th , At the Monaco Grand Prix Stommelen finished sixth and Surtees seventh .