Transmission compatibility 1986 vs 1993

[Stevester 500E]

What is the latest year that a 1986 300e 3.0's 5 speed manual transmisison will fit into another w124 3.0? Basically I am shopping for a donor car that has a 5 speed tranny because I want to put it in either my 1993 300ce (which is actually an m104, not an m103). Also want to know if it will fit my 1995 e320 coupe? I have found a few, rare, donor cars from 1986-1987 but haven't found any post 1989 300e's with 5 speed manual transmissions. Help is greatly appreciated, here in souther california.