There were certainly a few RHD DeLoreans, the factory being in an RHD market and wanting some local cars to show off and IIRC they were converted as mentioned above rather than done at the plant.
Bell & Colville (Surrey Lotus dealer) used to sell unofficial RHD conversions of the later Alfa Spider models which they organised themselves. They'd previously sold official versions of the Mk 1 Spider, built RHD at the factory, as an official Alfa dealer. They've had many different franchises over the years - currently Lotus, Morgan and McLaren (service).
I've seen one of those 914 conversion to RHD. Nice, simple job with the straight 1970s dash and no front engine to get in the way of moving the brakes/steering.
For one reason or another I always liked the original 1990s Twingo. Renault sold shed-loads of them on the Continent and you still see them around. I guess the very compact, transverse layout may have made RHD impossible whereas British Mini could be built both ways from the start with its gearbox under the engine, not end-on.
It's still going to be a shock to see a RHD C8...
