Will this scrape on steep inclines or driveways?

The AF-2 profile is designed with factory clearance in mind — it extends the rear-end air management without aggressive rake. Check your vehicle's approach and departure angles against the diffuser's rear edge before installation; minor adjustments to your typical driveway line are rarely needed.

Is this purely cosmetic or does it actually improve airflow?

The AF-2 diffuser is engineered to smooth underbody flow and reduce rear turbulence. It's functional aerodynamics, not decorative — though the visual impact pairs well with the performance benefits.

What finish should I apply to the FRP?

Sand and prep the surface with appropriate grit before applying your chosen primer and topcoat system. FRP bonds well to standard automotive paints once properly prepped. Clear coat is recommended to protect against UV and road salt exposure.