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Just installed the clears a few days ago on my '06. Yep, i'd say the easiest way would be to remove the bumper. I actually removed one side (passenger) of the bumper and pulled it back some. This allowed easy access to the passenger side which is the pain due to the washer fluid container, and it also allows easy access to the drivers side with enough room to get your hands in there to "snap" them in place before screwing them in.