I just bought this from Jeff Tate @ Day Chevrolet. I thought it work on my project but no luck. Jeff made me a great deal but here is a chance for somebody to get an even better deal! BTW if you need GM parts he will give his fellow PT guys a good break
For those not aware the 2005/2007 CTS-V 5/7L used a lower mount alternator that rides on the same Y Body (Vette) Accesories.
$200.00 shipped in 48 states
Also included is the mounting bracket also brand new with (3) of the 4 bolts required

Here is a picture of LS6 acces.