Len, here are some photos of the different hardtop styles I have found. The Viking Blue car is a Shelby factory Dragonsnake (the first one built as a matter of fact). The Costilow & Larsen car was a factory delivered Dragonsnake to a private owner. You will notice how much more round the factory hardtop is. From what I have seen of the Revell kit hardtop it is more square like the independent comp. car.