Will this lip interfere with the trunk seal or bumper cover when fully assembled?

No. This lip mounts under the bumper and aligns with factory attachment points, leaving clearance for the bumper skin and any weatherstripping. Verify fitment by test-fitting the lip before final adhesive or fastener application.

Should I use adhesive or drill through the mounting points?

Both methods work. Adhesive offers a cleaner look with no visible fasteners but requires surface prep and full cure time. Drilling through allows for adjustability and easier future removal. Sand the FRP contact surface and degrease it thoroughly before adhesive application, or reference your vehicle's service manual for fastener torque values if drilling.

Is this lip stable at highway speeds?

Yes. FRP is engineered to flex with suspension movement and handle sustained speeds. The factory mounting points distribute load evenly and prevent lift-off. Ensure all connection points are fully secured and check them periodically during the first 500 miles of driving.