Will this diffuser scrape on driveways or steep inclines?

The rear diffuser extends downward from your existing bumper line. Check ground clearance on your vehicle's current setup before installation. You may need to adjust approach angle on steeper driveways depending on suspension height and driveway slope.

Is this functional downforce or cosmetic styling?

This is a GT Concept-inspired design piece. While the shape mimics functional diffuser aerodynamics, actual downforce benefit depends on airflow management throughout your entire rear bodywork. It's built for visual impact first and foremost.

What prep and finish should I use before installation?

Sand and prep the FRP surface before applying your chosen finish—primer, paint, carbon wrap, or bare-look sealant all work. Ensure proper surface adhesion by cleaning thoroughly and roughing the mounting area where fasteners will engage.