Will this diffuser scrape on steep driveways or inclines?

The Zeta diffuser adds minimal extension to the rear bumper line. Verify ground clearance on your specific setup by measuring from the lowest point of your current bumper to the ground, then factor in the diffuser's profile. Adjust approach angles as needed to clear your typical driving surfaces.

Does this require the side panels, or can I run just the center piece?

This is a center panel only and is designed as part of a three-piece system. Install the matching side sections alongside this panel for proper fitment and visual balance. Running the center alone will leave gaps where the side panels mount.

What prep work is needed before painting?

Sand and prep the surface with standard automotive-grade sandpaper before applying your chosen primer and final coat. FRP surfaces benefit from surface conditioning to ensure paint adhesion. Follow your paint manufacturer's prep guidelines for best results on plastic substrates.