want to install ASD/LSD in a w124 300e

[5speede]

I've bought two w124 300e's, one a good working car and another as a spares car as its automatic transmission is stuffed.

I think my spares car may have an asd as the diff has a little hardline going into it and a reservoir for something under the bonnet that i can't figure out so i'm guessing its this (it doesn't have self leveling suspension btw)

If it is does anyone know how worthwhile it would be to transfer it over? i hear they work a little even without the pressure.


thanks in advance