Will this interfere with the trunk lid or rear bumper when opening?

No. The racer lip profile is designed to sit flush with the factory bumper without obstruction. Install it aligned with the bumper's existing gaps and you'll have full trunk access.

Can I glue this down or do I need to drill?

This spoiler uses factory mounting points on the bumper, so drilling is not required. Use the existing fastener holes and you're done. Clean and dry the mounting surface before assembly for best adhesion if using any supplemental sealant.

How does FRP hold up at highway speeds?

FRP is engineered for vibration resistance and structural rigidity. At normal highway speeds, the single-piece design stays solid. Ensure mounting fasteners are snug and torqued properly per your vehicle's service manual for maximum stability.