If you are looking for an auto locker, you might see if Richmond Powertrax has a listing for your model. These are similar locker design to the Lock-Right, but they are a "soft locker"....they ramp on and off with less noticeable effect.
I used one in my Pontiac Firebird and it was very easy to drive on the road...only an occasional audible click as it unlocked in a roundabout.....never had a "locker moment" with it.
Probably, a good LSD like the Truetrack is the way to go....