There are jacking shoes available to fit in MB jacking holes. A jacking shoe is a post that slips in the jacking hole and terminates in a heavy steel lifting pad. I have a set for my 300D. I don't know how specific they are from model year to model year. You can check with a dealer.

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'78 300D 310K Maple Yellow / Bamboo
'87 300D 81K Barolo Red / Safron (RIP @ 113K)
2003 E320 34K Pewter/Charcoal
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