head bolts

Hello there I have two questions: Firstly, could someone please let me know the series start and end numbers for the M156 engine. I am interested in the last six digits. I have the xxxxxxxx064557 Engine and wanted to see if this is near the end of the series Secondly, my understanding is...

I am now the proud owner of a 2008 C63 Estate. It has full MBSH and as far as I can tell has been quite well looked after. The car is original, not chipped, messed up or buggered about with but, as always with my cars, bought with a rush of blood.... However, I have read on here and elsewhere...