i dont think beau is locked, but i could be wrong...
and yes the 12bolt aussie locker will work on the VX...as long as you buy a new axle (this is what Ldub is going through right now)
Not a new axle Jack, just a new carrier, which is what the ring gear bolts to, & also contains the "guts" of the rear diff. Either planetary gears(open) or a locker.
The stock carrier,(LSD) won't work with the locker.