Will this wing interfere with the trunk lid when opening or closing?

The wicker bill profile is designed for rear overhang mounting. Before final installation, open and close your trunk through its full range to confirm clearance. Mark any contact points on the surface beforehand so you can verify fitment without binding.

What mounting hole pattern should I use?

Reference your vehicle's OEM spoiler mounting locations on the trunk deck. Mark and verify all holes before drilling. The one-piece design mounts directly to existing or new mounting points — use your service manual to confirm fastener locations and spacing for your setup.

Does real carbon fiber need special maintenance to stay clear and protected?

Carbon fiber benefits from a protective clear coat to guard the weave against UV fading and contamination. Wash with mild soap and water, and consider applying a UV-resistant sealant periodically. The twill pattern will remain visible and protected with basic care.