What's the mounting hole pattern, and will it work with my existing trunk lid hardware?

The wing uses factory-pattern mounting locations on the S13 trunk lid. Before installation, verify your trunk lid hardware is intact and measure the hole spacing against the wing base to confirm alignment with your specific vehicle's configuration.

Will the wing endplate or chord interfere with a trunk spoiler or rear hatch?

The D1 proportions extend rearward noticeably. If you have a trunk spoiler or modified hatch, physically mock-up the wing position and measure clearance between the wing base and your hatch or deck lid to avoid interference.

How do I prep this FRP wing before paint?

Sand the entire surface with appropriate grit to scuff the primer coat, then wash with soap and water to remove dust and debris. Fill any small imperfections with filler before final sand-and-prep, then apply your chosen primer and topcoat system according to the paint manufacturer's instructions.