Will this interfere with my trunk seal or closing mechanism?

The rear lip is designed as a bolt-on addition to the lower rear bumper area and should not affect trunk operation when properly aligned. Test the trunk opening and closing before final fastener tightening to ensure clearance during installation.

Should I use adhesive or drill fastener holes for mounting?

FRP can be mounted using either mechanical fasteners or epoxy adhesive — both methods work well. Adhesive offers a cleaner look with no visible fasteners; drilling allows for easier future removal. Choose based on your preference and intended permanence.

How stable will this be at highway speeds?

A properly mounted, single-piece FRP lip with secure fastening or quality adhesive will remain stable at highway speeds. Ensure all mounting points are equally tensioned and check fasteners or adhesive cure time per product instructions before extended driving.