World Championship of Makes
Sixth placed Guenter Steckkonig (GER) with Giulio Pucci (ITA) Martini Racing Porsche 911 Carrera RSR leads Piero Monticone (ITA) with Giovanni Boeris (ITA) Team Giovanni Boeris Chevron B21 Ford who finished thirteenth.
World Championship of Makes, 57th Targa Florio, Little Madonie, Sicily, Italy, 13 May 1973.