I am in the process of swapping an OM617 into my 404 Unimog rockcrawler. I have pulled the gas motor out and am waiting to pick up my 617 in a few weeks. I have been told that the adapter plate that was bolted to the back of the gas motor (M180) will bolt right up to the back of an OM617.

From the pictures I have seen, this looks to be right, but until I have the 617 at my shop, I cannot be sure. Does anyone know if the Mercedes engines of this vintage use a "standard" bolt pattern to bolt adapter plates to? Thanks.