The only MB that I know of that used that size ring gear was the 190E 2.3-16V. However several W124 chassis in europe also used that same limited slip diff. 185MM ring gear.
That would require a 4mm spacer between the LSD carrier & the ring gear.

__________________
MERCEDES Benz Master Guild Technician (6 TIMES)
ASE Master Technician
Mercedes Benz Star Technician (2 times)
44 years foreign automotive repair
27 Years M.B. Shop foreman (dealer)
MB technical information Specialist (15 years)
190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)
Retired Moderator