Will this interfere with my trunk seal or bumper panel alignment?

No. This lip mounts to the existing bumper structure using factory attachment points. Verify clearance on your specific bumper by checking the OEM mounting hole locations before final installation. Minor trim or sanding may be needed depending on your bumper's finish condition.

Should I use adhesive, bolts, or drill new holes?

This lip uses your bumper's existing factory mounting points — no drilling required. Fastening method depends on those OEM holes; use hardware appropriate for your bumper material. Always dry-fit first to confirm alignment before final attachment.

Will this lip stay stable at highway speeds?

Yes. FRP construction provides the rigidity needed for highway stability when properly mounted to factory points. Ensure all fasteners are fully tightened and check them after your first 50 miles of driving to confirm they've settled.