Will this interfere with my trunk seal or underside trim?

The Taka front lip mounts at the bumper fascia and does not extend into the undertray area. Verify clearance at your vehicle's existing mounting points before drilling or fastening — factory attachment holes are designed to avoid interference, but aftermarket bumpers may have different hole locations.

Do I need to drill new holes or can I use the factory mounting points?

This lip is engineered for factory mounting points. If your bumper cover has OEM holes in the correct locations, fastening is adhesive-free and bolt-on. If your bumper has been modified or repaired, you may need to verify hole alignment before committing to fasteners.

How should I prep the FRP before painting?

Sand the surface with appropriate grit to scuff the finish, then wipe clean and apply your chosen primer and paint system. Follow your paint manufacturer's preparation instructions — FRP takes standard automotive primer and paint without additional sealers.