Will I need to modify my lower valance or air intake area to fit this?

The Zero style was designed to work with factory-style mounting, but you may need to assess your current lower bumper trim and fog light surround fitment. Some trimming of existing plastic may be required depending on prior modifications.

Are the fog light cutouts pre-drilled, or do I need to cut them myself?

Cutouts are not pre-drilled on this cover. You'll need to mark and cut fog light openings to match your bumper support structure before installation.

I have a wagon model. Can I use this bumper cover?

This bumper is designed for the sedan body. Wagon fitment may require using sedan front fenders to align the bumper properly due to body line differences.