Will this interfere with the trunk seal or weatherstripping?

The front lip mounts to the lower fascia and does not contact the trunk seal. Verify fitment by comparing the lip profile to your vehicle's OEM front bumper geometry before final installation.

Can I use adhesive instead of drilling?

FRP front lips are typically mounted via factory fastener points, not adhesive. Surface prep and fastener type depend on your vehicle's OEM attachment method—reference your service manual for the correct mounting procedure and fastener specifications.

How stable is this at highway speeds?

FRP panels are engineered for road stability when properly mounted to OEM attachment points. Ensure all fasteners are tight and that the lip sits flush with the bumper before driving at speed. Check fasteners periodically as vibration can loosen hardware over time.