Will this interfere with the trunk seal or hood fitment?

No. The lip is positioned under the air dam and does not extend into hood or trunk clearance zones. Verify your OEM bumper is in standard condition before installation to ensure proper alignment.

Do I need to drill new mounting holes, or does it use existing fastener locations?

This lip is designed to align with factory bumper attachment points. Confirm your vehicle's OEM mounting configuration before installation to verify hole alignment. If drilling is required, mark and test-fit before committing to fastener placement.

How should I prepare the surface before painting?

Sand the FRP thoroughly with medium-grit sandpaper to remove any surface gloss, then wipe clean with a tack cloth. Your chosen primer and paint system will bond best to a properly abraded, dust-free surface. Follow your paint manufacturer's prep guidelines for topcoat application.