why would you want to do this other than beacuse you cant afford a proper LSD ?

they can only make handling worse, totally compromising the way the car drives and handles.

we did this about 10 years ago to a mates SD1 rover V8 ( as the diff gave up) and the car came to a sad end, at low speeds the car was horrendous, at anything other than a straight line the car was awful, and lets face it, even with a shit LSD you dont even use the slipper in a straight line,
thats before we even get into lift steering issues