No, the Borg-Warner is a viscous unit, it locks progressively as it spins up. An LSD is friction based, so spins oh- so- slightly more freely the faster it spins.
The early LT95 also had manual diff lock, so the best of both worlds.
As long as there are no situation when you wish you hadn't engaged diff lock then it's a win-win situation. They are usefull on road if you find the front end understeers or breaks away when you're driving, roundabouts are the favourite.
What you'll find it the back end tries to step out instead, but only as far out as the front end so that all 4 wheels are doing the same speed. Bit of a hoot :lol:
Never seen one sold, it's worth what you are prepared to pay.