I was searching ebay the other day and I came across an exhaust company called Gibson. So I searched on google and found that they make an exhaust system for the 2008 CTS. Here are some of the links I found.

This one is for the non Aluminized tubing w/ stainless steel tips
http://www.jcwhitney.com/jcwhitney/p...questid=259266

Here is another link of the Aluminized tubingw/ stainless steel tips. The link shows a different exhaust in the picture but if you CLICK the enlarge button, another window should show the right exhaust.
http://www.autoanything.com/exhausts....aspx?kc=ffsku

This is the stainless steel w/ stainless steel tips. The link shows a different exhaust in the picture but if you CLICK the enlarge button, another window should show the right exhaust.
http://www.autoanything.com/exhausts....aspx?kc=ffsku

My question is, has anyone heard of tried this exhaust system yet?