Give your CTS an extra look with the the Rear Fog Lamps thats standard on all CTS sedan models overseas. Please note You will need your OEM valance to look like this below (CTS V pictured) Base model CTS Models part number is 15264304 for the valance you would need.

You can always get creative with the cuts. and mounting brackets. Below are the official GM part numbers of the valance & brackets. But again you can get creative on the mounting and wiring them up.

rear valence 15264304

foglight brackets 15858979 & 15858980