Sorry about that I feel bad now - anyway I went back on RealOEM and it seems the 8 cylinders and most of the newer cars spec a part # that is supplied by Eldor - whereas my M54 uses part #
12138616153 - which is supplied by Delphi and no longer Bosch
I'll be going with the Delphi coils on my I6 with some fresh NGK Iridium's in the next week or two just for maintenance and to refresh the system a bit