Get ahold of C Love over on the Modern Muscle forums. He lives in Chicago and has a CTS-V with the LPE 630hp pulley and tune upgrade. I'm sure he would love to get together with you and show it to you.
Here is a link to one of his threads.
http://www.modernmuscleforum.com/showthread.php?t=3079
He's got some connections at a local dealer and might be able to help you with a purchase too.
J