Again! the only US cars(last 20 years) that had limited slip are the 560's & the 190E 2.3 16V. IN europe limited slip was offered on many cars. THE W123 chassis NEVER had limited slip.
Benzmac is correct, ASR didn't happen until 1991.
4-Matic came out here in 1990 & ASD came out in 1991 on lower HP cars & diesels.

With modifications the 16V limited slip WILL fit into a W123 chassis!! I have done several for myself & a friend.

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MERCEDES Benz Master Guild Technician (6 TIMES)
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