Will this lip interfere with my trunk seal or brake light housing?

This lip mounts to the lower front air dam area and does not contact trunk seals or rear lighting. Verify clearance at your specific bumper cutout before final installation.

Can I use adhesive, or do I need to drill through the bumper?

FRP lips can be secured with quality automotive adhesive for a clean look, or drilled for mechanical fastening if you prefer permanent integration. Adhesive approach is popular for lower-damage installation; verify your bumper's surface prep and choose an adhesive rated for plastic-to-plastic or plastic-to-paint bonds.

How stable is this at highway speeds?

FRP construction provides good rigidity, and a single-piece design eliminates flex points. Install with full surface support (adhesive coverage or evenly spaced fasteners) to ensure stability at speed. Proper prep and secure mounting are key to avoiding movement.