Will I need to modify my existing fog light cutouts to fit this bumper?

Reference your vehicle's OEM bumper hole locations before final fitment. The D1 Sport V3 profile may require minor trimming or adjustment to existing fog hole cutouts depending on your current bumper's opening size. Dry-fit the bumper and mark any areas needing modification before committing to cuts.

Does this bumper have sensor or cooling duct provisions?

The D1 Sport V3 design is a closed-face bumper without pre-cut sensor holes or cooling ducts. If your vehicle requires OEM sensor placement or airflow routing, you'll need to carefully cut and finish these openings yourself, then seal the FRP edges with appropriate finishing material.

Can I install this with my lower valance or undertray, or will it interfere?

The bumper's profile is designed to work with lower body panels, but fitment depends on your current valance height and positioning. Test-fit the bumper with your existing lower undertray in place to confirm clearance. Any gaps or binding should be addressed by adjusting undertray mounting points or carefully trimming the bumper edge.