Got a new license plate bracket and need to drill two extra holes. Two questions - the Hannigan is fiberglass, are there any precautions I should take in drilling? Secondly, I need to either pull down the carpet from the trunk to place the nut/washer for the new bracket and replace the carpet or possibly drill right through the carpet. Any recommendations folks? I'm pretty inept when it comes to such things so many thanks for advice.....