Hi Stan,
Have a look at Euro 4x4 parts or Megastore4x4.pt. Both list them in their online catalogues. Although neither is in the UK both give excellent service and they will be the right parts.
In the past I have tried using the UK suppliers who say they can supply these sort of parts but in my experience few have the vaguest idea what you are talking about primarily because the 40 series was not imported so doesn't get listed in their books
Regards,
Rodger