Will this wing stay secure at highway speeds?

Yes. The wing mounts to factory roof attachment points designed to handle structural loads. Use appropriate fasteners and torque them per your vehicle's service manual to ensure stability during normal driving.

Does the wing interfere with a roof rack or cargo carrier?

The wing sits at the rear of the roof. Verify clearance with any rack or carrier you plan to run before installation. Measure your specific setup against the wing's profile to avoid contact.

What surface prep is required before painting?

Sand and prep the raw FRP surface with appropriate grit sandpaper before applying your chosen base coat and clear. Follow standard automotive paint protocols to ensure good adhesion and finish quality.