The cost of the body conversion, chassis modifications and 6.3 engine (if specified) was dependant on individual specification but I believe it well exceeded £100,000. Thus with the cost including the original car was in the order of a quarter of a million pounds.
Before the introduction of the rare V8 Vantage Volante special edition, these cars represented the fastest and most powerful open Aston Martins. Indeed, they are very easy to confuse with the later supercharged cars, although there are a few clues to assist the enthusiast. The 6.3 conversions usually have the 18 inch OZ split rim wheels, square side indicator repeaters and Citroen CX type door mirrors. Also the 6.3’s have a different profile to the rear wheel arch extension. The photographs on this page represent three of the six known cars to have been rebuilt with this body style. One car is unique because in addition to supercharged Vantage front and rear styling, if features Vantage sills and Vantage profile to the rear wheel arch.