 Complete the following phrase:  During this period, he enjoyed some success, scoring his only race win, in the 1952 non-championship Trofeo della Reggione Sardo and finished on the podium in the 1953 Targa Florio. Away from Sportscars, Giletti raced in just one Formula One race, the 1953 Gran Premio di Modena, but retired due to a valve failure with his Maserati A6GCM. He was also originally listed to race in the 