Will this interfere with my trunk seal or hatch operation?

The rear lip sits below the trunk line and does not contact or obstruct the hatch. Verify clearance to your factory bumper extension before final positioning to ensure clean panel alignment.

Can I use adhesive to mount these, or do I need to drill?

FRP diffusers work best with a combination approach — adhesive bonding supplemented by factory mounting points on the bumper structure provides maximum stability at speed. Sand and prep all mounting surfaces before applying your chosen adhesive system for lasting hold.

How do I prep FRP before painting?

Sand the surface with appropriate grit to promote paint adhesion, then wipe clean of dust. Apply your chosen primer and topcoat system per the paint manufacturer's instructions. The FRP gelcoat resists UV, so finish quality depends entirely on your paint prep and application.