Just drop the bumper of to a body shop and have them fill the reflector and drill holes and match the paint. It will look like a Euro bumper.
And I never get why people here likes euro plates so much, back in europe most people i know that are car enthusiasts disslike them, and they always tend to special-order the ''small europlate version''. I havnt seeen the small version here in the states yet. But i guess its something different i guess.
And third, why would you drive around with a europlate here anyway, youre not in europe!