Head Bolt Affected VIN - 2010 & older, & early 2011s




As many of you know, I have been providing Datacard info to many members interested in their build sheet, or to verify engine serial number.
I received a PM from a member today who indicates he has a "late 2010 C63". The Datacard for the VIN he provided shows a delivery date of 11/24/2010. The Datacard indicates the engine number is over 4,000 engines beyond serial number 156983 60 060658 where the new head bolts were employed.
Since we've believed that all 2010 and older, and some 2011s were in the affected range, I'm confused about how this one could be outside the range. I did a search to find out which digit in the VIN corresponds to the model year, but had no luck getting a clear answer.
Anyone have any thoughts on all of this?
Thanks,
Joe


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Vin: WDDGF7HB4BF577180


Vin: WDDGF7HB4BF577180
Regards,
Joe
Engine 156985 60 062228 so it has updated head bolts.


Regards,
Joe






Regards,
Joe
WDDGF7HB8BF552122


WDDGF7HB8BF552122
Regards,
Joe




