Will this interfere with my front bumper's brake light cutout or sensor locations?

The lip attaches to the lower bumper and does not modify light housings or sensor mounting. Before installation, verify your bumper's existing cutouts align with where the lip will sit. If your vehicle has parking sensors or fog lights in the bumper fascia, measure clearance at the attachment points.

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

This lip is designed for factory mounting point attachment. Consult your vehicle's service manual or contact your installer to confirm whether your bumper uses existing threaded inserts or requires new fastener holes. FRP adhesive alone is not recommended as the sole fastening method for front-end panels exposed to road speed and vibration.

How will this lip hold up at highway speeds?

Proper fastening is critical for stability. Once bolted through the factory or reinforced points, FRP panels are rigid and handle sustained speed without flex. Secure all attachment points evenly before hitting the road, and inspect fasteners after your first few hundred miles to confirm nothing has loosened.