Will this diffuser scrape on steep driveways or inclines?

The diffuser extends below the stock bumper line, so high-angle driveways, steep parking lot ramps, and rutted terrain may cause contact depending on your suspension height and approach angle. Verify ground clearance on your specific setup before final installation.

Does this diffuser provide actual aerodynamic benefit, or is it purely cosmetic?

This is a styling piece designed to enhance rear appearance. While the Quadro profile mimics performance diffuser lines, functional downforce requires precise rear-end geometry, ride height, and speed. Treat this as visual enhancement; aerodynamic gains are minimal at street speeds.

What prep and finish work do I need to do before installation?

Sand the surface with medium-grit sandpaper and prep according to your paint system's requirements. Apply primer and topcoat of your choice to match your vehicle. Proper surface prep ensures paint adhesion and long-term durability.