Check out this article on how to add original equipment fog lights to Classic 1965-1968 Ford Mustangs that were equipped with standard grilles, from Mustang Monthly Magazine.

This 2004 Ford Mustang Mach 1 features a 4.6-liter V8 with likely more than its ... Mach 1 body kit and graphics, plus mods such as Euro headlights with black housings, yellow fog lights, ...

When I say ‘do your business’ I mean install fog lights. If you haven’t noticed, the new Mach 1 has two gaping circles inside its grille. These aren’t intakes—they’re backed by plastic.