Trry ebay mate. When i first got my 3dr - it had D99 MAT which was the original plate. I put it on one of these reg transfer companies site as they said i can get 1500 for it. They had it on there for months and months and not a single call.
In the end i put it up on ebay and sold it within a week for 600 quid - which was fine for me as the plate i replaced it with was cheaper and better