Are OEM fog light holes already cut?

No. Verify your vehicle's OEM bumper hole locations and sensor positions before drilling. This allows you to match your exact setup without unnecessary cuts.

Will this clear my trailer hitch receiver?

Measure the depth of your hitch receiver and compare it to the bumper's rear profile. Most aftermarket bumpers sit flush with the rear fascia, but a recessed hitch will require clearance verification before final fitment.

What prep is needed before painting?

Sand the surface with appropriate grit to promote paint adhesion, then clean thoroughly to remove dust. Apply your chosen primer and topcoat per the paint manufacturer's instructions for best results.