The incorrect point was that it was the Torsen 2 that was developed for use on Toyota Motor Corporation’s Lexus IS-F.
As we can see there now is a new version of the Torsen. (It will be a little bit difficult to Goggle it, as it was only announced on Tuesday of this week.) (Also, you can take your time, as HQ said in the RBJ that it should take less than five years.)
The real point here is that this new version is now both:
the "#1 Selling Feature: Compact full-traction "torsen" differential ...
and "The Torsen LSD is the main drawcard to the updated IS F"
............
May I remind you that a differential that is the main selling feature of anything and the main draw card for anything is one of the reasons that we all invested in Torvec.