Will this interfere with the trunk lid or hatch operation?

No. The wing mounts to the existing body points at the rear end; clearance is designed to accommodate full hatch travel. Verify your specific vehicle's mounting boss location before installation to confirm alignment.

What mounting hardware do I need?

The wing uses factory mounting holes on your vehicle. Gather fasteners that match your OEM specifications — refer to your vehicle's service manual or original hardware for correct bolt size and torque values. Do not reuse old fasteners if they show wear.

How stable is this at highway speeds?

FRP construction resists flex and vibration under normal driving conditions. Ensure all fasteners are tightened to specification and verify mounting bosses are free of damage before installation. Proper installation is critical to performance and longevity at speed.