Most of the data for these vehicles is on microfiche - and to obtain a datacard, you would need to contact MBCC.
The EPC does contain the vehicle information for all the subassemblies, and the different chassis types etc, but it's a lot of data to wade through - which is why the datacard would help as it contains the axle numbers, engine numbers transmission numbers transfer case numbers etc etc etc...
for the dash, I grabbed a screenshot just as an FYI.
Dr. Diesel has already answered for you, but this is a case where I think owning a copy of the EPC would be incredibly valuable for you, as it allows you to ascertain accurate information about the MB powersystems parts/diagrams.
Screen Shot 2018-04-02 at 08.45.00.JPG
It might also be worth getting in touch with John Madour who works in MB powertrac in Melb HQ.
I may be able to pass on some information - or he may even be able to access the datacard - no guarantees though. I will ask later in the week and see if he is able to get a DC for you through work.
(if it costs $ do you still want it? If I recall MBCC charge a small fee for datacard copies)
cheers,
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