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

No. The Eros Version 2 design clears the trunk lid hinge mechanism and operates without interference. Mount the wing using the factory hole pattern on your trunk lid, and you'll have full lid clearance.

What mounting hole pattern does this use?

This wing uses your vehicle's factory trunk lid mounting points. Before installation, reference your OEM trunk lid documentation to identify and mark the correct hole locations, then drill and mount accordingly.

How should I prepare the FRP surface before painting?

Sand and prep the surface using the method appropriate for your chosen topcoat system. Once smooth, apply your selected primer and finish. The FRP substrate is stable and ready to accept paint without additional conditioning.