As the Clan was accepted in international motorsport events as a Group 5 car. The following indicates it must have been homologated as a Group 4 car at some point.
SPECIAL PRODUCTION CARS (Group 5)
Art 268-Definition: Special production cars for which no minimum production
number is required, but which are derived from those cars benefiting from
a valid homologation in Groups 1 to 4.
|