Did you ever complete this project? I have a 2006 TL that I was considering swapping a cluster from an '07 I have in my possession which was the year when they redesigned the cluster for the TL. I've completed what I call "Instrument Cluster Upgrades" in another vehicle with great success. But, it's not always straight forward. So, the only question is if the the two harness connections are the same and getting the programming done that was mentioned in this thread. I would appreciate more information on this topic if anyone has experience doing this.