I think these are the same as my 407 looking at the part numbers. They also fit an XK 120 and many early Jaguars.
Amongst other late 50’s and 60’s cars.
My parts are obtainable from Past Part in Bury St. Edmunds, Suffolk, UK.
4 Chase Road, Bury St. Edmunds, Suffolk, IP32 6NT
Email,
restore@pastparts.co.UK
Www.past
Sorry web site
PastParts
Example Dunlop Rear Caliper rebuild and return £86.40
Hope this is useful they have supplied most spare parts for my 407.