I just acquired a 2005 sl500. I can find no evidence that a front license plate was ever mounted on the car even though it is required in my state. The vehicle history shows that it has always been in this state. Do I need to drill into the front bumper in order to mount a bracket or is there another solution. question 2 does the front license plate block too much airflow from reaching the radiators if the plate is mounted below the front bumper and hanging down in front of the lower grill and air dam? Any insight would be appreciated.