I believe that all the fogs on the new body styles are H10 bulbs. I just used the halogen super whites in the fogs instead of spending the money for the ful HIDs. They do look good and are much brighter than the stock bulbs.

 

The DDM Tuning kit for the fogs was only around $30 plus shipping, I think Silverstars are at least that much, and after a 250 round trip (all at night), I am finally happy with my truck's lighting.