I have a GS 400 with the HID's. The Lenses are in poor condition. If I were to change them do I have to get a special one cause of the HID lights.

 

you can't just get the lens, you will have to get the whole housing if you want to replace it. and you will need the hid housing (not sure if you can get just the housing without the hid ballasts and bulbs)

poor condition you mean rock chips? did you try wet sanding?

 

Great advise.I have not even thought about getting it wet sanded.

 

no problem, try it out and see, if it's so bad you want to change it, then wet sand won't make it "worse"