Like all of the 6C series, the 1930 6C-1750 Gran Sport (GS) benefited from Vittorio Jano’s excellent engineering and design principles. It was an updated version of the 6C-1750 Super Sport from 1929 which had similar specification. Engine now developed 102 hp. New to the Gran Sport was shorter wheelbase that was reduced 50 mm with shorter rear leaf springs. The slightly smaller fuel tank was repositioned behind the rear wheels and the battery box was moved from the fender to inside the cockpit. The first big win of the GS was at the 1930 Mille Miglia, where Tazio Nuvolari won in an epic duel with Achille Varzi.
Costantino Magistri drove his private 6C-1750 in the 1931 Targa Florio, and retired on first lap with the broken valve gear. Magistri, Italian driver from Palermo, took part in Targa Florio in 1931 – 1935 driving his Alfa Romeos. In 1936 he won Targa Florio Sports car race in Lancia Augusta.
| Season | Series | Event |
| 1931 | Grand Prix | Targa Florio |
| Driver | No. | Entrant |
| Costantino Magistri | 22 | C. Magistri |
| Scale | Manufacturer | Collection |
| 1:43 | Brian Phipps / Metro Conversion | |
| Cat. No. | Quality | Rarity |
| 
| |
formula143 