I saw BMW Bloomfield's ebay account had a couple for sale, so I asked via email about them and this is what I got back.
And once I saw that I remembered seeing in a service roundtable video about the warehouse switching from old to new, just would never have thought they would find a couple hitches hidden in the back of the old one when emptying it...
So we350z, you should feel mighty lucky to have your hands on a lost and found treasure!!! (go play the lottery while you're at it)