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

No. Jet Stream wings are designed to clear the trunk panel at full articulation. Mount it at the factory hole locations and you'll have full trunk operation without contact.

What mounting hole pattern does this use?

This wing uses the factory rear deck mounting points. Verify your vehicle's OEM hole locations before drilling any new holes; no custom drilling should be required if you follow the factory pattern.

How should I prepare the surface before painting?

Sand and prep the surface with standard automotive sandpaper before applying your chosen finish. A clean, scuffed surface ensures paint adhesion and a professional result.