I thought the NA 617's also had M pumps but it's not my specialty. You can easily identify the M pumps by the splined delivery valve holders.

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-Evan


Benz Fleet:
1968 UNIMOG 404.114
1998 E300
2008 E63


Non-Benz Fleet:
1992 Aerostar
1993 MR2
2000 F250