There used to be sets on eBay you could get. The inserts, fog light kits, just the fog light brackets, etc. etc.
I got an aftermarket fog light kit and am very happy with it. Not much into LEDs myself anymore, as its awful hard to accent your truck with them and not overdo it or give it the "pimped" look. Let us know how it goes, and...
So make sure and post pics after you're done!