You can keep the factory fogs easily- Keep the OEM intake and you can use the OEM grills and keep the fogs.

The Wag intake shroud w/out fog light looks like it allows more air flow than the OEM. The Wagner carbon intake shroud and grills fill the space. You can keep the fogs with the Wagner shroud, but they are behind the Wagner grills- and the OEM plastic around the fog light is removed. I'll take some pics when I go to the shop later today.