Does this use the factory trunk mounting holes?

Yes. The wing is designed to bolt to existing factory mount points on the trunk lid, so no drilling or custom fabrication is needed. Verify your trunk lid surface is clean and free of rust before installation.

Will the wing interfere with trunk lid closure?

No. The Skylark profile is proportioned to clear the trunk opening. Before final fastening, open and close the lid through its full range to confirm clearance with your specific setup.

What's the best way to prep and finish the FRP?

Sand the primer surface with moderate grit to establish tooth, then wipe clean. Apply your chosen primer, filler, or paint system. FRP accepts most automotive finishes well once properly prepped.