Will this interfere with the trunk seal or weatherstripping?

The under-bumper mounting keeps the panel tucked beneath the rear fascia, so it sits clear of the trunk seal. Verify your stock bumper sits flush to the body before installation — any pre-existing gaps should be addressed first to maintain proper sealing.

Does this require drilling, or does it use adhesive mounting?

The under-bumper design allows for multiple installation approaches depending on your bumper's existing mounting structure. Review your vehicle's rear bumper attachment points to determine whether bolt-through or adhesive prep is right for your setup. Most builders opt for a combination of both for maximum stability at speed.

What prep work does the FRP panel need before painting?

Sand the entire surface with progressively finer grits to open the gelcoat, then wipe clean. Apply a quality primer surfacer to fill any micro-voids, sand again, and finish with your base coat. Proper surface prep ensures paint adhesion and a factory-smooth finish.