Quote:
Originally Posted by DonDP
I am still stuck though as to the differences between the e46 m3 and z4m diff...
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Only way you will find out is by dissembling it or talking to the engineer who actually designed it. If there is a difference it's not likely a difference in principle, only in application.
Additionally, it's very likely all you are seeing is something as simple as a different location of machining for whatever reason. If you had many more pics it would be easier to tell, but like I said, dis-assembly is your best and really only bet if you truly must know.