i've took my front number plate and surround off to fit a smaller one on(still legal as its only short) and there is a nice recess it fits in perfectly, but there are two holes in the bumper what the surround sits in?!!
can you get grommets to fit it?
its a '96 spec model....the one in the avatar

I have the same "situation". The shorter plate fits really nicely into the bumper recess.
I have looked everywhere for the right size blind grommets, but no luck so far.
So, as the bumber is dark blue, I just used a couple nof bits of black insulation tape to go over the hole.
Seems to do the trick ok!