Does this work with an OEM bumper or does it need the full wide body kit?

This bumper is engineered as part of a complete wide body kit. The GT500 profile and geometry are designed to align with matching side skirts, fender flares, and rear components. Using it standalone will create fitment and visual alignment issues. Pair it with the full kit for intended results.

Will fog light cutouts or sensor holes need to be drilled?

This piece ships as a blank cover. You'll need to reference your vehicle's OEM bumper openings — fog light locations, parking sensor holes, and any other cutouts — and transfer those measurements to this cover before installation. Drill and route as needed to match your factory configuration.

How should I prepare this for paint?

Sand the entire surface to break the gelcoat and create a tooth for primer adhesion. Use even pressure and work methodically to avoid low spots. Once sanded smooth, wipe clean and apply your primer-surfacer system, sand again, and finish with your chosen color coat. raw FRP condition means the work begins with sanding.