Actually, you would be making it into an 170 DS. According to the Niemoeller catalog, and a few logical deductions, you will need a front motor mount bracket specifically from a 170 DS, maybe a rear transmission mount bracket from a 170 Sb, DS, S-D, or S-V, BUT since the dimensions of this piece are probably more frame related than engine related, I would guess that your 170 S bracket should work. As was said by John Ellis, the rubber mounts are all the same. I don't think any other driveline issues would be different.
I think your real problems will come in adapting a ponton OM 636, because the motor mounting is completely different on those cars, at least in the front, and you may need a 170 D front timing cover, as well as an oil pan. I think you will need to use the 170 transmission and bell housing.