Will these extensions use my factory trunk mounting points?

Yes. These wings are engineered to align with existing body attachment locations. Before installation, verify that your trunk lid has standard hole spacing — measure center-to-center distance between fastener points on your vehicle and confirm they match standard OEM patterns.

How stable are these at highway speeds?

FRP wings are rigid enough for track and street use when properly secured. The two-piece design allows each section to be mounted independently, distributing load across multiple attachment points. Ensure all fasteners are torqued evenly and verify tightness after the first 100 miles of driving.

Do I need to sand and prep before painting?

Yes. Sand the surface with appropriate grit to promote paint adhesion, then wipe clean of dust. Follow your paint manufacturer's recommendations for primer and topcoat application on FRP substrates.