Given the C36 uses a 606 crank in a M104 it should be the same as a stock M104. The M104 has 8 bolts with a 75 mm circle and even spacing. I think the dowel pin is at 70 mm circle. The pilot is 46 mm. A Mercedes bell housing limits ring gear diameter to about 12" and clutch to 9.5" ish.
Someone on the performance side of things used a 8 bolt Ford Modular OHC V8 flywheel on a V8 MB but I don't know what the pattern is.
Have a look at this MB engine to Chevy adapt.
http://www.transmissionadapters.com/Mercedes%20diesel.ht