Reinforced guibos
Reinforced guibos
You can get outputs that fit pretty much any pattern for the 722.6. You probably have a 90mm version on a c220. The 190 diff has a 90mm pattern. If you are planning on making much more than 300lb.ft of torque then I would get a larger differential from later clk amg cars and put a quaife or wavetrac in. Then upgrade the drive shaft with at least the larger pattern f/discs.
Remember when the driveshaft come loose it can come through the floor and kill you or at least do a lot of damage.
I have the 100mm pattern in my car and at around 400lb/ft of torque at the wheels with sticky tires I can twist up a brand new flex disc in one night at the drag strip and I have had the center support flex enough that the center u joint hit the seat belt bolts. So I am not doing anything more until a new custom one piece driveshaft is in my car.