Jim, the W116 is a 1980 Turbo 300SD. It is a diesel 5 cylinder 617.950 turbo diesel engine. Your engine is a 617.952 turbo diesel engine.

The transmission bolts look a little different, not by much and maybe not significantly. I'm not sure at this point as I'm just getting ready to remove the transmission from the old engine and see how it mates up to the 617.952 engine.

I know about the oil sending unit being mechanical on the 1980 617.950 and it doesn't look like there is any problem switching to it from the electrical on the 617.952. The mounts on the engine were different but I just removed them from the old engine and put them on the 617.952 engine so there should be no problem there.

I was curious however if anyone had done this before and if there was something I needed to know ahead of time.

Thanks.

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Rev. Dr. G. Church of the SubGenius
It doesn't take a genius