Where are you located?

I think you're better off looking for a C220/E220 manual transmission (which was offered in Europe).

See this C220 in eBay item # 290190137060

Finding a manual from an m111 is likely going to be an easier bolt up than one from an m102/103 (although I believe the m104 is similar to the m111).

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Daily Driver: 02 E430 4MATIC
In the family: '03 E500 // '04 ML500 // 64 220SE