Will this interfere with my trunk seal or rear bumper?

No. This is a front lip mounted to the lower fascia — it does not extend into the trunk area or contact the rear bumper. Verify clearance with your bumper's existing trim line before final positioning.

Can I install this with adhesive alone, or do I need to drill for fasteners?

Both methods work depending on your preference and the mounting points on your bumper. Adhesive (epoxy or automotive-grade panel cement) offers a clean look; fasteners provide additional security. Sand and prep the surface thoroughly before committing to either method.

How does FRP hold up at highway speeds?

FRP is rigid and stable at speed when properly mounted. Ensure all connection points are secure and that the lip sits flush with the bumper. Check fasteners or adhesive bonds periodically, especially after curb contact or rough road surfaces.