I purchased a pair of these mirrors from Dreamcar Company.
https://www.thedreamcarcompany.com/store.html
Terry responded immediately that he had material supply issues and was waiting for billet aluminum to arrive, and he kept me fully in the loop throughout. When the mirrors arrived they looked great.
The instructions were good, but because of the way my wind wings had been installed by a previous owner I couldn't follow the instructions as written and just swap the wind wings from passenger side to driver side. I had to completely diassemble the mounting blocks and wind wing brackets and then reassemble in a different fashion. The photos were extremely helpful as they showed clearly what the finished product would look like. When it was all done the mirrors fit perfectly and I'm ecstatic about their fit, finish and function.
Terry at DreamCar Co. was very helpful and was very prompt in responding to emails.
One of the best supplier experiences I've had in a long time. Highly recommended - both for the product but especially the service.