The GRAND-AM Gran Tourismo (GT) and Super Gran Sport (SGS) classes allow 28 different car models from 19 different manufacturers including Acura, Audi, BMW, Cadillac, Corvette, Chrysler, Dodge, Ferrari, Ford, Honda, Jaguar, Lexus, Lincoln, Mercedes, Maserati, Nissan, Pontiac, Porsche and Toyota. GT cars must have the exact same outer dimensions as thier showroom counterpart.
