In 1967, Bizzarrini rebodied at least one V-8 as a coupe and sold it to the Duke of Aosta (it is known as the Duca d’Aosta coupe).
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The first V-8 powered car debuted at Le Mans in 1966, with Swiss drivers Edgar Berney and Andre Wicky, but records indicate that the team retired after three hours with a cooling problem.
Diomante resides in Nichelino, Italy and operates Autocostruzioni S.D., where he keeps parts, special tools and original moulds from Bizzarrini P538s and Bizzarrini 5300s.