Will this interfere with the front bumper's existing trim or undertray?

The lip is designed to sit below the factory bumper cover using OEM mounting points. Before final installation, test-fit the assembly to confirm clearance with any undertray panels or wheel well trim on your specific vehicle configuration.

Should I use adhesive or drill through the bumper to mount this?

This lip is engineered for factory anchor points, which typically use existing fastener holes. Verify your bumper's mounting structure before assembly — drilling new holes is not necessary if factory attachment locations align with the lip's mounting tabs.

How stable is FRP at highway speeds?

FRP is rigid and stable at speed when properly secured to factory mounting points. Ensure all fasteners are tight and the lip is fully seated before driving. Inspect mounting hardware periodically, especially after rough road surfaces.