Will this cover existing bumper sensor holes in my current bumper?

No — this is a full replacement cover. Before installation, verify that your OEM mounting points align with this cover's anchor locations. If your factory bumper has integrated sensors, you'll need to relocate or remove them prior to fitting the new cover. Compare the hole locations on both bumpers before committing to purchase.

Do I need to sand or prep the surface before painting?

Yes. Sand the surface with appropriate grit to promote paint adhesion, then apply your chosen primer and topcoat. Proper surface preparation ensures even color match and long-term finish durability.

Are the lower valance and fog light cutouts pre-drilled?

This is a solid one-piece cover — no fog holes or valance cutouts are pre-fabricated. You'll need to measure your factory fog light locations and carefully mark and cut the openings yourself if your setup requires them. Test-fit the cover first to confirm positioning before making any cuts.