Finis for the radiator shroud is 6488797 and was last known to be available.
The radiator itself is discontinued, with no more stock in Europe other than Austria, and 3 in Spain (cost more than they are worth to import them).
The metal pipe than runs across the front under the radiator shroud was obsolete in about 2002 unfortunately. I believe that there is a pipe on the Cosworth models though that modifies quite easily (bend a bracket slightly, etc).
Hope this helps a little.
Also, if you have no luck with your local dealer, try contacting QuickCo on 0161 865 0911. They are the biggest central warehouse as used by Ford dealers in the country. They will supply to the public as well, so well worth checking with them as well.