Windoze 7 may not like the post box...............
Now I'm going to be afraid to install the front one because of future rock chips......but wait ! Just don't drive the car
Get some of that 3M clear bra/film stuff to protect the plate.
I already have my red NOV sticker sitting on my desk.
I'm too lazy to look it up, but I think covers of any kind are verboten in CA.Frank