Do these door caps require drilling or modification to the door?

No drilling required. These mount using factory mounting points already present on your doors. Verify all mounting hole locations on your vehicle before final installation to ensure alignment.

What prep work is needed before painting?

Sand the surface thoroughly and clean away all dust before applying your chosen paint system. Standard automotive surface prep applies—work with your painter or follow your paint product's surface preparation guidelines.

Can I remove these later without damaging the door panels?

Yes. Since they bolt to factory mounting points, removal is straightforward and does not alter the underlying door structure. Keep fasteners in a safe place if you plan to reinstall OEM caps later.