Will my factory fog lights fit through the bumper openings?

The Bomber style features a closed lower valance with integrated air ducting, so factory fog light housings will not pass through. You'll need to either blank off the holes or source aftermarket fog lights designed for this bumper's openings.

Does this cover the bumper sensor holes on the stock bumper?

This cover will sit over the factory bumper, so sensor cutouts depend on your final fitment. If you're running factory sensors, verify hole alignment before painting and installation, or plan to relocate sensors to the reinforcement bar.

Can I install this without removing the lower valance?

You can bolt the bumper cover to the existing bumper in place, but removal of the lower trim pieces will give you better access for a cleaner final fit and faster installation.