Alfa's subsidiary, Autodelta, created an evolution model called 33/2. A road version, dubbed Alfa Romeo 33 Stradale, was also introduced. At the 24 Hours of Daytona, the Porsche 907 with 2.2L engines were dominating the overall race, but Alfa took the 2-litre class win, with Udo Schütz and Nino Vaccarella; after that the car was named as Daytona.