Will this interfere with the trunk seal or lid clearance?

The lip is designed to mount below the bumper line without interfering with trunk operation. Verify clearance with your specific vehicle's hardware before final installation, as trunk latch height varies by trim level.

Does the rear brake light need modification for fitment?

The lip spoiler mounts at the lower rear bumper and does not require brake light cutouts or modifications. Your factory lights remain untouched.

Is adhesive or drilling required for mounting?

This panel is engineered for traditional bolt-through fastening at factory mounting points. Refer to your vehicle's service manual for the appropriate fastener specifications and torque values.