Will this diffuser clear the ground on aggressive dips or parking lot inclines?

The GT500 profile extends lower than OEM, so test your approach and departure angles before committing to final installation. Consider your suspension height, tire diameter, and local terrain when positioning the panel.

Does this diffuser add functional downforce or is it cosmetic?

This is a styling piece first. The GT500 geometry improves visual proportion and can aid airflow separation at the rear, but real aerodynamic gain depends on overall vehicle setup, speed, and track conditions—not the diffuser alone.

What surface prep should I do before painting?

Sand and prep the surface with standard automotive prep steps before applying your chosen primer and topcoat. Follow your paint manufacturer's recommendations for FRP substrate adhesion.