The motor MB should have made was the OM632. Two 616 motors joined to form a V8, with twin turbos, of course.

__________________
'90 300SE 298k
-300K and it gets put into retirement.
'80 300D 255k Purchased new by family in 1980.

Had a:
1973 220 (gas)
1980 300SD
1992 400E