Hey Guys,
Sorry, wasn't too clear. I was trying to frantically respond quickly to our new member's response since he was getting impatient
Okay, here's the scoop.
First, the V8 Pathy differentials are exactly the same as the Armada's Diffs: M205 front and R230 rear 2.937 ratio. The V6 has an R180 front and R200 rear diff, 2.937, 3.133 and 3.357 ratios.
For the rest of the world the Pathy's get an R180 front and R230 Rear in 3.538, 3.692 ratios.
Second, ARB has released a locker for the R230 rear but for ratios 3.538 and up (that's why we in the US are out of luck). I know, I went to ARB in WA to get fitted, they tried, but were off by 4-5mm too thick. Everything else fit perfectly. Possible modified locker in the future to fit.
Now, for the swap, the Frontys and X folks are fitting the M205 diffs from a Titan/Armada up front because the R180 were considered weak and kept breaking. They had 2 options while going this route: keep the same length by buying the V8 Pathy axle shafts and CVs, or go the more elaborate route and replace the UCA/LCA and axles from the Titans, thus providing greater lift and articulation (9-11" travel). You also get a 3" wider track on each side. But it works and has been done successfully with great results.
Following so far? ....
The Armada has the IRS in the rear, the same as the Pathy. For the V8 folks, since the diffs are the same, the only major difference is the length of the UCA/LCA, springs and axles. You can swap out these components from an Armada just as you would the fronts. For the V6 folks, pretty much the same thing, but you do have to get the R230 diff as well from the V8 pathy of Armada.
I haven't seen the rear swap done yet, but looking at both suspensions (my business partner's Armada), I believe it can be done with very little mods.
Advantages? Yes: 1) Stronger Diffs 2)3-4" Height Increase 3)More articulation 4)ARB Locker soon 5)Lot cheaper than an SAS (solid axle swap) 6)Wider track: 3" per side
Hope this helps.