Is anyone using a bracket to mount the front license plate without drilling holes in the bumper? Where did you purchase the bracket and how easy was the install?

Looking to add an oem spoiler to my winter beater for fun. Saw these online and the price seems reasonable. http://www.carccessory.com/product/spoiler/2002-honda-crv-spoiler-1752 Is drilling required for the oem spoilers?

I'm about to embark on adding the backup sensors and the part where you drill big old holes in the bumper had me worrying a bit. The sensors require 24 and 26mm holes. I bought a set of step drills on eBay thinking they'd work great. Only to have a duh moment when I realized the surfaces are...

I really like the look of the tailgate spoiler but I'm worried about all that drilling going on in the tailgate. Would there be any rust issues? Will it have any adverse effect? I would probably have it installed at the dealership Any feedback would be appreciated. Thanks

Has anyone ever had to drill a hole in the firewall? I want to put in an interior car heater (110v). Is there a "preferred" spot?