Good thinking Chuffer - you're right that the twin tail pipes would suggest a V8 (although a bit small for an american lump) and the body was designed as an homage to the Frazer-Nash Le Mans Replica. It's an unfair question really since the car is a Special. It started out as one of these......
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......(not this one - that's mine) It was owned by Sean Mooney, a Director of
Turrino Wire Wheels. He wrote the original body off in a crash and commissioned
Project Heaven to fit a (very expensive!) new body, very much on the lines of the Frazer-Nash. The frontal aspect is more of a giveaway.......
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.....since it sports the grille from the Daimler engined Jaguar MK 2 Saloon. Underneath the car is pretty standard SP250 and fitted of course with Turrino wheels. It made a great noise up Shelsley!