The W201.122 190D chassis had a whole bunch of different gearboxes fitted =>

Mercedes Benz EPC 201.122 Chassis Information | Everything Benz

The 717.411 is amongst them as is the 717.412 which was fitted to petrol engines (M102s) and diesels (W201 and W124 - OM601)

So I don't think the shaft won't be a problem.

I wasn't aware that dual mass flywheels were fitted to W201 petrol engines. My M102.910 doesn't have one.

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1992 W201 190E 1.8 171,000 km - Daily driver
1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone
1965 Land Rover Series 2a Station Wagon CIS recovery therapy!
1961 Volvo PV544 Bare metal rat rod-ish thing

I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior



Don't leave that there - I'll take it to bits!