Hi,
One thing you must consider is what the Insurance companies consider a modification. If you do as Coopertaz says he does above and has an accident while running with the type of plate he should not be using his insurance could be invalid.
There was a case of a standard car(cannot remember the make) that the owner had stuck higher spec badges on to his pride and joy to make it appear it was a better car that he had. Had a minor accident the car was not as spec as far as the insurance company was concerned, they had not been told of the addition of the misleading badges, so did not pay out.
Paddy