Will this interfere with my front trunk seal or bumper gaps?

The Spec Z lip is designed to sit flush with the lower bumper line. Check your vehicle's current bumper fit before installation — slight gap adjustment at the factory attachment points may be needed if your bumper sits differently than stock.

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

This lip mounts to the factory bolt holes on your bumper beam. No drilling required. Use the existing hardware and fasteners to lock it in place — adhesive alone is not recommended for a front lip that absorbs road impact.

Will the lip stay stable at highway speeds?

Yes. Proper fastening at all factory mounting points ensures the lip stays rigidly attached. Make sure each fastener is tight and the lip is evenly seated across the bumper before driving — uneven mounting can cause vibration or flex.