Does this wing mount at the same points as the OEM trunk lid?

No — this is a standalone rear wing assembly with its own mounting footprint. Verify your vehicle's trunk lid panel for clear drilling points before installation. Shakotan wings typically sit proud of the trunk surface, so measure clearance from your existing lid edge to avoid interference during fitment.

Will this wing stay stable at highway speed without additional bracing?

The three-piece structure provides inherent rigidity, but installation quality matters most. Ensure all mounting points are torqued evenly and check fastener tightness after the first 100 miles. If you plan extended high-speed driving, consider reinforcing the wing root with internal gussets or additional fasteners — consult your build setup for specifics.

What surface prep is needed before painting?

Sand the entire wing assembly to open the gelcoat and ensure primer adhesion. Once sanded and cleaned, apply your chosen primer system and topcoat per manufacturer instructions. FRP accepts standard automotive finishes — match your primer and paint selection to your vehicle's base coat for best results.