Yes, you are correct, but I didn't mean convert the existing fog lights. I mean change them out completely with different lights. Something like this... Fog to driving light conversion album | Ttschwing | Fotki.com, photo and video sharing made easy.
Are the actual light housings the same for the 13s as the 11-12 CS fogs?
2013 fogs are roughyl 1" smaller in diameter than the 2010-2012 fog lights.