Does this wing sit flush with the trunk lid or will it interfere?

The Kouki profile is designed to integrate with the factory trunk opening. Before mounting, test fit the panel on your vehicle to confirm clearance and mark mounting hole locations. Refer to the OEM trunk lid dimensions in your service manual to verify final positioning.

What mounting hole pattern does this use?

This panel is engineered for direct fitment and uses factory-spaced mounting points. Once you've positioned the wing and confirmed alignment, drill or use existing holes based on your chassis setup. Have your service manual handy to cross-reference mounting locations.

Will the FRP stay stable at highway speeds?

FRP is rigid and maintains its shape under normal driving conditions. Proper mounting with appropriate fasteners and even weight distribution across all connection points ensures stability. Once installed, the panel becomes part of your rear structure — tighten all fasteners securely and double-check them after the first 100 miles.