Allen to the Rescue
Gearup - In case you aren't familiar with Allen (Mr XLR), he is a premier XLR salesman from a dealer in Illinois.
Send him a private email with your VIN, if you don't want to broadcast it.
If there is an answer, he can find it.
Looking at the Cadillac Europe website, I was unable to see any pictures that revealed much different. In addition, they don't have the "build your cadillac" option, so could review the options to see if they are different at all.
Having lived in Europe, I know that the cars sold in Europe and the USA (indepedent of where they orginated - Europe, USA, Asia) can be quite a bit different. It will be curious to see what Allen comes up with.