Will the 4" fog light opening fit my aftermarket lights?

The opening is pre-cut to 4" diameter. Measure your fog light housing before ordering to confirm fitment. If your lights are significantly larger or smaller, you may need to adjust the opening or source different lamps.

Do I need to modify the bumper to fit my OEM sensors?

This bumper is designed as a visual cover. If your vehicle has factory parking sensors or collision detection in the bumper area, reference your OEM bumper hole locations and plan any drilling or modifications before installation.

What should I do to prepare this for paint?

Sand and prep the entire surface to remove any release agent residue, then apply primer and your chosen finish. Work in a well-ventilated space and follow your paint manufacturer's guidelines for FRP substrates.