One point for the first Puzzler to tell me the name of the company behind this conversion please.
NSU RO80 Targa by ..............................well the only reference I can find thought it was a factory conversion as it had been accepted at an NSU concours event
No definatley note an official NSU Factory conversion, as I knew the guy that made these, and he wasn't German!
Crayford ?
No, not Crayford.
Experts, can you convert this one?
Converted by S. Kremer?
Very close. Can you expand on this at all, like the name of the company. I'll lock this for you for 24 hours.
Some digging learned me that 2 (almost?) identical cars were made. One by Simon Kremer and another one (and that seems to be the one in your puzzle) by Ashley Turner. Simon Kremer owned a company called Rotechnics, but it is not clear to me if this particular car was built there. This car is also equipped with a Mazda RX-7 engine. Conversion of both cars was done around 1990-1991.
You've got the point as RoTechnics was the company name I was after, and you've added some useful additional information too.
As you say, two Ro80 Convertibles were made by Simon Kremer of RoTechnics before he sadly died at an young age in the mid-1990s. He had planed to make more Convertibles at his small workshop near Windsor in England, where he used to install the more reliable Mazda RX7 engines into Ro80.