can't reply to the private message for some reason...
No, I don't have a spare passenger side axle. In fact I supposedly have one on the way that I found by sheer luck.
Mike from RRE gave me:
That is a viscous front diff. You need a special longer right front
joint/cup to run it.
Try Conicelli or Norco, it will take a while to get. MR166160 23,300
I have found that a lot of the gearing and synchros in the JDM RS and e1-3 trannies are variations on the standard US stuff. You kinda take it apart and count the teeth. Bearings are all standard stuff.