I have got this car as MGTD by G&H Perl from Viena
Yes, so do I. I didn't think it was quite as easy as that but not even 1 question for a car I didn't know existed until recently!
Actually I have it as being built in 1957, but I don't know when the base car was built; it might even be a TF rather than a TD.
I'll just call it an MG Special I think.
Another Perl MG has appeared before here; apparently they were built for an American MG dealer to sell in the US, but I don't think very many were actually sold..
Unmodified puzzle picture: