This has been discussed her before. As I recall, all thise ZZZZ's are part of the "generic" VIN, THEN, when the (almost) finished car gets pointed toward a particular geography (USA, CAN, ROW, etc..) Those specific letters are put in the final code, replacing the ZZZ and the Z.
All the rest odf your VIN is the same, so it's pretty certain tht nobody has altered anything, IMO...
That's what I recall, others may have more, or different information for you...
Don't worry, post some pix of your car - you do have one of the world's top mechanics taking care of you, it seems..
