Will this need paint before installation?

That depends on finish and your preference. If the existing trim is painted, test-fit first to confirm the molding color matches before committing. Most installs can go unpainted if you prefer OEM-style appearance.

Do I need special tools or hardware to install this?

Basic hand tools and a socket set will handle the job. The molding bolts at factory points, so you're working with existing hardware — no drilling or welding needed.

Can I remove or swap this out later if needed?

Absolutely. Since it's bolt-on at factory attachment points, removal is straightforward and reversible. Your tailgate returns to stock configuration if you ever want to swap it back.