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Group O Racing & Sports Racing Cars (1966-1969)

The group is intended to cater for racing, sports racing and sports cars with a competition history established in the period between 1 January 1966 and 31 December 1969, excluding vehicles fitted with aerodynamic devices as defined under "specific requirements" below. Formula Vee, Formula Ford and Formula 5000 cars are also specifically excluded from this group which is intended to reflect the development of wide treaded racing tyre technology and its effect on suspension and chassis design but stopping short of the period when external aerodynamic devices became a major design feature with a significant impact on cornering performance.

Consideration may also be given to the classification within this group of vehicles constructed between 1 January, 1966 and 31 December, 1969 but with a competition history established subsequent to 31 December, 1969, provided that the specification of the vehicle is consistent with-the general standard of technology evident in vehicles raced during the group period and the vehicle is compatible in appearance with such vehicles.

Ja & Jb Vintage Cars Ka and Kb Post-Vintage Lb sports & racing cars M racing & sports racing Nb Production Touring Cars Nc Production Touring Cars O Racing & Sports Racing Cars Formula 5000 Q Racing & Sports Sa Production Sports Cars Sb Production Sports Cars Regularity