Will this interfere with the trunk seal or bumper gaps?

No. The lip is designed to mount flush with the factory bumper using existing attachment points. Your trunk seal and bumper fitment remain unchanged. Before installation, verify that your bumper is centered and has no previous collision damage that could affect how the lip sits.

Do I need to drill new holes, or does it use factory mounting?

This lip uses factory mounting points on the bumper — no new holes required. Locate the existing fastener bosses on your bumper and bolt the lip directly to them using standard hardware from your local automotive supplier.

How do I maintain the FRP finish after painting?

Once you've prepped, painted, and clear-coated, treat it like any other painted panel. Wash regularly with mild soap, avoid harsh chemicals, and apply UV-protective wax every few months. FRP is naturally resistant to UV but the paint and clear coat are not, so maintaining them extends the life of your finish.