Mezue ahịrịokwu na-esonụ: Mgbe e webatara ya na 1966, 275 GTB / C na-agba ọsọ site na ọtụtụ ndị na-agba ọsọ na-enweghị onwe ha na ọkwa dịgasị iche iche nke nkwado ụlọ ọrụ Ferrari, gụnyere NART, Maranello Concessionaires, Scuderia Filipinetti, na Ecurie Francorchamps. E debara aha atọ 275 GTB / C na
1966 24 Hours nke Le Mans, abụọ n'ime ha mechara. Maranello Concessionaires-abanye 275 GTB / C (chassis 09035) nke Roy Pike na Piers Courage gbara gbara nke asatọ n'ozuzu ya na nke mbụ na klas, ebe Ecurie Francorchamps 275 GTB / C (chassis 09027) nke Claude Dubois na Pierre Noblet gbara gbara nke iri n'ozuzu ya na nke abụọ na klas. Mmeri ndị ọzọ a ma ama gụnyere 1st na klas na 1967 Targa Florio, nke Tullio Sergio Marchesi na-anya. Marchesi gara n'ihu merie 1966 na 1967 Italian GT Championships na-anya 275 GTB / C chassis 09007.