1/25 Scale '69 Shelby GT500 Convertible Plastic Model Kit from Revell. Skill level: 2. Parts: 115. Legendary performance with convertible class. Mustangs were never just cars; they were icons of American industry and ingenuity. For the years that the Mustang was combined with the genius of Carol Shelby, unmatched performance was coupled with an elegance so refined, that these cars are now show-piece collector's items. With its powerful 428 ci V-8, the GT500 was a top competitor on and off the track. Kit features a convertible top that can be modeled in the up or down position, optional dual quads, stock or custom wheels and high-rise manifold.