Will this interfere with the trunk seal or lower bumper panels?

No. The N-1 profile is designed to sit cleanly under the factory bumper without contact points that would cause seal compression or panel gaps. Verify your bumper mounting points are square and undamaged before installation.

Should I use adhesive or drill through for mounting?

This lip bolts to existing factory mounting locations—no adhesive or drilling required. Use the OEM fastener points on your bumper assembly for a solid, repeatable fit.

Is a clear coat necessary?

Yes. Carbon fiber benefits from UV-protective clear coat to maintain its appearance and resist oxidation over time. Sand and prep the surface before applying your chosen clear coat finish.