RoverAsh:
As stated way lots of times,try
www.roversland.com
Give them a call and let them know that part number,as they import lots of euro. specs stuff for Discos and practically all LRs.
On their web store,I saw what appeared to be an euro-spec. headlamp a while ago.I can tell the difference because the border of the reflector inside the headlamp is a bit darker than the U.S. specs one,and besides,by looking on the back side of the lamp,the little bulb(parking light) that goes inside the lamp is mounted a bit to the side of the big h-4 bulb,instead of underneath the h-4 as in the U.S. lights.
Carlos