That's a great story. If you don't mind me asking, how good was the deal?
As far as the BT PK, the BT module is in the left cargo quarterpanal under the DVD NAV module (the BT module is just about flush with the cargo floor). On the top of the BT module there are a bunch of codes, letters, and numbers. The one you are looking for the is the Passkey, or PK.
Let us know if you find it, and post some pics