I know, why would you want to? I'm still struggling with the 2.2 gas motor in the car and not making much headway. Everytime I fix one thing, something else fails. This might be a major nightmare idea but thought I'd throw it out here.

I picked up a 1970 220D today for parts. Turns out to be a good running car. They lost the front flex coupler, tore up the floor pan and broke the back end of the trans.

Anyway, here's the swap I'm looking at. 220D has a manual trans, it's shot. 220.4 is auto trans, it's good. Diesel motor with auto trans in the 220.4 chassis. Will it go together?

This is kind of a last resort since parts for the gas motor seem to be pretty rare. Couldn't find rings or pistons online, standard or oversize. The 220D isn't really worth fixing. It's got some serious rust issues on top of the driveshaft damage.