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Good catch on the broken part. Can the linkage part be separately parted (if not new, maybe an assembly from a recycler)? Way back @ 1980, my old Chrysler New Yorker Brougham's transmission had a nylon gear separator part (broken/ragged) in my transmission pan, during a transmission servicing at a supposed reputable transmission shop (was later explained after I almost got scammed into a new transmission it was just there for the assembly of the transmission and most either self destructed or stayed in place throughout it's life). My thanks to my friend who worked in a dealership service department who told me about it & saved me a huge amount of $ (at the time unavailable funds). That little part in your pan reminded me of that affair. Hope you can source the part you need without having to remove the transmission! Good luck!
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