Thatís a good idea ^
What is the condition of your upper arms? I had a set of factory ones in there once upon a time that made a very similar noise, I assumed it was the driveline angle getting out of whack. Ended up pulling them and installing TQ arm (enabled me to set the angle) and no more noise.
The upper arms are in good shape the spherical rod ends are still tight so not to worried about them. I also double checked the pinion angle and everything looks good. I'm wondering if something was going on with the rear brakes like the rotor being warped might cause the T2R to make a noise since one side might tighten up the loosen when on the brakes. Maybe that could cause the torsen to make a knocking sound.
I think the best bet is to disable the rear brakes take for a short drive and see if the noise goes away.