Will this lip interfere with the trunk seal or bumper alignment?

No. The circuit profile is engineered to sit flush with the factory bumper contour. Verify that your front bumper is centered and undamaged before installation; a misaligned OEM bumper may cause edge contact. Sand the mounting surface and dry-fit the lip before final assembly to confirm fitment.

Does this accommodate fog light cutouts or sensor holes?

This lip is a solid panel and does not include pre-drilled cutouts. If your setup requires fog light or sensor access, mark the hole locations on the lip before installation, remove it, and drill accordingly using a suitable bit for FRP. Seal any cut edges with epoxy to prevent water intrusion.

How do I maintain stability at speed with this extended front lip?

The circuit profile is designed for aerodynamic balance and will not cause instability on highway or track use. Keep the mounting bolts tight and inspect them after the first 100 miles and every 500 miles thereafter. Avoid standing water and puddles deeper than the lip's lowest point during initial break-in; FRP absorbs minimal moisture but can lose adhesion if wet for extended periods before cure.