You have reflectors which is the years I specified.
Projector housings came stock on 00-02 models, they have little projectors which have the lens that looks like your low beam. A sharp, focused beam and cutoff, which is why you see xenon lights in projectors, so there isn't excessive glare.
Throwing hid in reflector housings whether it's fog lamps or low beams is not the best for light output and glaring to oncoming drivers.
If you look close at my fogs you will see they are different looking because of the projector lens.
If you want the parts list to do the retrofit of the projector fogs on your car it will cost you $200 for the oem housings, then the cost of an hid kit if you want to put xenon in them. You will need an H3 kit for the projector fogs as they take an H3 bulb.
There is a popular thread which I believe is in the "tips and tricks" where we outline it all. A quick google search for "projector fogs x5" on google should bring it up