Will this interfere with the trunk seal or bumper cutouts?

No. The three-piece design sits flush with the lower fascia and does not extend into sensor or lighting cutout areas. Verify your vehicle's OEM bumper configuration before installation to ensure clearance around any fog light or parking sensor openings.

Can I install just the center section, or do I need all three pieces?

Each section is independent. You can run the full three-piece setup or install the center piece alone for a subtler look. All three pieces use the same mounting interface, so mixing and matching is straightforward.

How should I prep the FRP before painting?

Sand the surface with progressively finer abrasive to create tooth for paint adhesion, then wipe clean of all dust. Apply your chosen primer and topcoat per manufacturer specs. FRP accepts standard automotive paint systems without additional bonding agents.