Torsen didn ' t come until ' 94 . Doesn ' t mean it wasn ' t swapped out for one . I ' ve never tried to differentiate them and I don ' t know much about the VLSD , but I ' d guess if there isn ' t a rubber damper around the front , then you probably have a VLSD . Other than that , I think you ' d need to look inside to find out for sure . edit Well , found a little more info from The shop manual states to test a VLSD you put a torque wrench on the hub wheel in the air and turn 90 degrees with 11 ft lbs of torque car in gear . This should take no less than 4 seconds . If less then you have either an open diff or the VLSD is toast . Another test for a good VLSD is to jack up the rear with both rear wheels in the air . A good VLSD will turn both rear wheels in the same direction when manually turning the drive shaft . The open unit or toasted VLSD will turn the wheels in the opposite directions . There is no rebuild kit for the VLSD and the unit is completely sealed so you can ' t even get inside it short of cutting it