Will this interfere with the factory bumper seal or trim when mounted?

No. The P-2 profile is designed to sit cleanly beneath the existing fascia without pressing against weatherstripping. Verify clearance at your front bumper's lower edge before final installation to ensure your specific bumper mounting geometry aligns with the lip attachment points.

Do I need to drill new holes, or does it use existing mounting points?

This lip uses factory bumper attachment locations. No drilling required. Confirm your bumper's existing fastener holes align with the mounting tabs before assembly — most setups bolt directly without modification.

How should I prep and finish the surface?

Sand the primer lightly with fine grit to de-gloss, then clean thoroughly before applying your chosen base coat and clear. Proper surface prep before paint ensures durability and a seamless blend with your bumper finish.