@kiks
let´s play here about center diff

If you realy have any detailed information about any issue of torsen (or helical and so on) center diffs, please let them know me. I like to make a build of center from Quaife and i don´t like to spend money for nothing. The torque split can from 75/25 until 25/75 (1:3 multiplication). So that, if also a Quaife in front and rear is installed, the maximum of "static" torque per wheel will be 0.75*0.75->0,5626 so 56,26% of the engine torque - original torque about 25%, but the poblem is, like you told, when one wheel (or axle) spins free and get abruptly torque back to this wheel (axle), so that the principle of linear momentum shows a affect, so this "dynamic" torque could reach a "worst" and destroying amount. But this is theoretical, maybe you have detailed information about and can help with experiences.
I found that some Mitsu Evo driver have a center from Quaife installed and for street use they like this - with over 500Hp. The first production line had some problems of to small planetary gears, but this problem is solved.