CLASS I CLASS I: 1965-1972 FIA MAKES CHAMPIONSHIP CARS Abarth 3000, Osella Alfa-Romeo T-33 Cobra 427 Dino 206 SP Ferrari 330 P2, P3, P4, 312:, 512, 312PB Ford GT-40, MkII, MkIV Lola T-70 GT Porsche 906, 908, 910, 917
class A class B class C class D class E class G class I invited groups