The factory fogs mount to the inside of the front bumper cover. Not sure about a truck that doesn't come with fog lights, but it MAY still have the spot for them and you'd have to cut a hole to make them fit. Either way, you cut or remove the cover for the factory spot, and I'm sure you can figure out how to mount an aftermarket set. Then you'd just wire to a switch. Cali Raised has OEM style switches to keep it looking factory. Not sure about existing wiring.
I have my old factory ones laying around. Basically brand new. Not sure if you want to grab them for a killer deal and try and make them work. Let me know!