I’m unsure about using stub shafts with different amount of toner ring teeth?
As the dual sensors that mount in rear cover read them & unsure what would happen...others may know. I installed a Quaife in my 3.357(RC33) diff & made a big traction difference vs the open unit I removed.
The 3.69(RC36) unit had a vlsd...and worked fine for me with abs,Cruise etc...but the cruise would get confused if you accelerated above highest cruise rpm’s (3k@90mph) & the cruise light would flash until ignition was cycled.
Hope you get everything working properly