Will this cover OEM fog light cutouts and sensor holes?

This bumper is designed as a solid cover. Before installation, verify your vehicle's OEM fog hole and sensor locations, and mark them on the FRP cover. You'll need to carefully cut openings to match your original bumper's specifications.

Does this work with aftermarket lower valances?

This is a full bumper cover, so any lower valance fitment depends on how it aligns with the OEM mounting points. Test-fit the valance against the cover before final installation to confirm compatibility with your specific setup.

What surface prep should I do before painting?

Sand the entire cover with fine-grit sandpaper to scuff the primer and improve paint adhesion. Wipe away all dust and debris, then apply your chosen primer and topcoat per the paint manufacturer's instructions.