The only RR bit on Dodds' car was the radiator grille, and Rolls were mightily upset at him calling it a Roller. The bodywork and trim build quality (I looked it over closely) was dreadful, and the engine bay, even to a 14yr old, looked a bloody mess. The engine was a Rover unit from a tank (Merlin based admittedly, but no way a RR), and according to one of the contemporary car mags had been bought as scrap with a cracked block. Tyres I recall were Avon Turbospeeds rated at 130mph max. The hype and the reality were far apart. It eventually caught fire on an Autobahn and burned out.
Saw in the Sunday Times Mag this week that Jay Leno has a car he claims has a Merlin in it. Is this (mustang car) the same one?