Will this interfere with my trunk or hood seal?

The OEM-profile design integrates with the stock bumper geometry and does not extend beyond factory dimensions. Verify clearance with your specific bumper trim level before installation, as aftermarket or damaged OEM bumpers may have altered mounting points.

Can I drill this for mounting, or should I use adhesive?

FRP can be drilled for bolt-through fastening at factory bumper attachment points. Drill pilot holes to prevent stress cracking. Alternatively, you can use automotive-grade adhesive in addition to mechanical fasteners for added security—the choice depends on your install preference and whether you plan to remove the lip in the future.

Does the front lip stay stable at speed?

Yes, when mounted securely at all factory attachment points using either fasteners or adhesive-and-fastener combination. FRP rigidity is maintained at highway speeds provided the mounting is tight and the lip is positioned flush with the bumper face. Check fasteners after the first few hundred miles to ensure no loosening has occurred.