The brackets for behind the door handle I got from Renel(in the days when they still shipped to the UK) but the mirrors are cheaply found on eBay. (Look for them under scooter mirrors. This was a tip I got from the big boss Bernie)) as for the flexible clip on mirrors I will have a look. I have a number of French cars from the ‘50s so I’m sure there might be one somewhere. Otherwise, try looking on ‘car builder.com’ as they seem to have a large variety of clip on mirrors.
Cheers
Paul Barnard