I read somewhere that the 86-89 560SL and 81-83 300SD share the same tranny, the 722.303. I may be wrong though.
-Joe

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'81 MB 300SD, '82 MB 300D Turbo (sold/RIP), '04 Lincoln Town Car Ultimate

Sooner or later every car falls apart, ours does it later!
-German Narrator in a MB Promotion Film about the then brand new W123.