vl turbo diff will have 28spline axles and na one will have 25spline, you can chek this by pulling one out and counting them...
non lsd will have black filler plug and lsd will have brown filler plug
if jack the car up off the ground and rotate one of the wheels forward and notice that the wheel on the other side is rotating in the opposite direction this means it's NON LSD.
hope that helps.
later
Ollie
Some original photos have not been recovered yet.
both wheels will rotate in different directions even if its lsd.
what you need to do , if you cant identify the tag , is jack it up , get one mate to hold a wheel still , while you spin the other , it should slightly start to tighten up , therefore it is a limo