Update:

Rear diff is for parts/rebuild only. It has a spun bearing and elongated thingy on the inside. Can get pics.

SLS valve for parts/rebuild. Has bad corrosion. Can get pics.

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08 R320 CDI current

Past
95 E420
87 300D Turbo 5spd
90 300TE
83 300SD
85 300TD
92 400E
85 190D