Do these use the factory mounting location?

Yes. These are designed for factory mounting points — no drilling or body modification needed. They bolt straight into the existing headlight buckets on your Super Duty.

Will I need to repaint or prep these before installation?

Test-fit first to confirm fitment and alignment. Prep and paint method depend on your finish preference and the condition of your truck's front end. If repainting your headlight trim panel, handle that work before final assembly.

Are bulbs and wiring harnesses included?

Only the headlight assemblies are included. You'll reuse your factory bulbs and harness connectors — no additional electrical work required.