What is the difference between the W126 master cylinder PN: 0044300901 and 0044302601?
Both the dealer and Pelican parts claim 0044300901 goes till Chassis 050789 and 0044302601 goes through 050790

I'm trying to order one to fit it to a salvaged 1983 300SD brake booster, and I just need to know which will fit, and if they both fit, which is better. I do not have the vin, and I know one of you bought a master cylinder for a W126 so please do me a grand favor and help explain this to me, because the Dealer gave me a vacant stare when asked the same question, and I hate blind firing.
as always thanks a million!

*I have a hunch the older vin and PN is for the W116 brake boster they put in early W126's.*
*is early 1981 to 1985? How early is early?*

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