Will this interfere with my existing front bumper or undertray?

No — A Spec design is engineered to sit flush with OEM bumper geometry. Before installation, verify clearance at your vehicle's lowest ground point, especially if you run lowered suspension or a front splitter. Check your rocker panel and undertray fitment with the lip in position.

What's the best way to prep and finish the carbon fiber?

Sand the bonding surface lightly to improve adhesive bite, then apply your chosen finish. Real carbon fiber looks best with a UV-protective clear coat to maintain gloss and prevent oxidation over time. Flat finishes work equally well if you prefer matte styling.

Should I use adhesive or drill mounting points?

Both methods work with carbon fiber. Adhesive offers the cleanest look and requires no panel drilling. Drill-through fasteners add mechanical security if you're in a high-vibration environment or anticipate frequent removal. Choose based on your install preference and driving conditions — either approach is sound.