Will this interfere with my factory hood or trunk seal?

The AF-1 profile is designed to sit flush with OEM bumper architecture. Before installation, check clearance between the lip edge and your hood underside—factory fitment can vary slightly. Sand any high points on the mounting surface to ensure even seating.

Should I use adhesive or drill fastener holes for mounting?

Both methods work. Adhesive (two-part epoxy rated for plastic-to-plastic bonding) provides a seamless look and no fastener holes. Mechanical fastening offers adjustability during fitment. Choose based on your finish preference and whether you plan future removal. Whichever method you select, prep the mounting surface thoroughly—sand to bare material and degrease before bonding or drilling.

How stable is this at highway speed?

FRP lips are stiff enough to resist flutter at normal highway speeds when properly mounted and sealed. Ensure your mounting surface is flat and secure across the entire panel edge. Any gaps or loose sections invite air movement underneath, which can cause vibration. Even pressure during installation prevents this.