Will these brackets work if my bumper cover has sensor holes?

These brackets support the bumper structure itself — they don't interfere with sensor placement or drilling. If your cover already has factory sensor cutouts, install these brackets first, then work around them.

Do I need to remove the bumper to install these?

You can install them with the bumper cover in place if you have access to the mounting points from underneath. Full bumper removal makes the job easier, but it's not mandatory.

What if my lower valance doesn't line up perfectly after installation?

Test-fit everything before fully tightening. These brackets mount at factory points, so alignment should be correct — but bumpers can shift during shipping. Make small adjustments at the mounting bolts until the cover sits flush.