The fog lights on my 06 Limited are messed up. They work, but are all scratched. Are there any aftermarket fog lights that fit in the grill inplace of the stockers? I searched but could not find any topics about this.

There are many on the market that will work.
It all depends on what you want to pay, or what
quality you want!

Of course you could just replace them factory replacements.
Check fleabay, I've seen 'em there for a decent price.
Or look at PIAA.