I don't think it's insane.....I have the trans from an '87 4-cyl. (about 200k miles on the clock) on my 190e 2.6; did the swap towards the end of last year and everything's still holding up. That trans actually had a 124 part number.

Sorry, I can't give the torque-handling question a definite answer; I haven't found info on max. torque specs for the trannies. My setup is working for me.

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1990 190e 2.6 - The only one I can really call "My Car".

1987 190e 2.3 - The donor car's up and running, only mods are Euros and a Sony headunit. My Dad's runabout now.

1990 300e 2.6 - The parents' ride.