The Concours Show at the National Convention is the pinnacle of originality, where the best of the best are judged. Classes, following the National Guidelines, are included for performance cars from Shelby American (and Ford), namely Cobras, Shelbys, Competition Cars (GT40s and original race version Cobras), Tigers (engineered by Carroll Shelby), and Bosses (the Ford derivative of the Trans-Am Mustang race cars developed by Shelby American). Teams of Concours Judges from across the country, with decades of experience, evaluate every detail of each car for originality, accuracy and workmanship.