Ok, I read the thread you linked, and then another thread that was linked on the thread you linked.
What I got from that second thread was that for North American Alltracs, VIN code is no guarantee of rear TORSEN.
However, for Japan spec (RHD, which is what the car I'm looking at) E151F on the tranny code with a 767 on the axle means LSD, right? Well, gotta look into that then. If that fails, I'll get the owner to launch it on gravel.