Very nice car, but that is not a normal C2 Corvette Convertible - the car in your picture with the side pipes was built specially for Harley Earl the Head of Design for General Motors.
http://corvettes.about.com/b/2010/04/07/harley-earls-personal-corvette-is-for-sale.htm
The following is the C2 convertible.
View attachment 118911
The 427 engine version had a different Hood (bonnet) as shown below.
View attachment 118912
Personally I would love either or both of these in the game - the 427 would be good to race against the Shelby Cobra.