I used mostly lemforder parts for everything but I did get a kit of the rear suspension arms from meyle. I have no complaints about quality of any of those.
Dropping the rear subframe is not that difficult with a good jack and an extra set of hands.

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Current fleet
2006 E320 CDI
1992 300D - 5speed manual swapped

former members
1984 300D "Blues Mobile"

1978 300CD "El Toro"