hi, everyone. i am planning to get a LSD for my 91 s13 hb w/o Abs&LSD. however, i am confused that if i have to get the whole differential or just the LSD? Also, will the USDM LSD fit the Sr20 in case i will do the swap in near future...

 

im pretty sure you could get a used s14 or j30 vlsd, correct me if im wrong. that would be the cheepest way to go. an usdm lsd would probably fit on an sr20 motor and sr20 tranny, i would think becasue you could utilize the stock rear end with the sr20 tranny and driveshaft. but im not really sure. hope this helps.
-t

 

i'd get whole pumkin
or you could get the unit it'self
the lsd and driveshaft will fit with sr

 

A search on the keyword VLSD would net you the best results here.