For comparison, here are a few shots of Rubicat with her new 72.5" XD60 axle standing next to Dynatrac's JK which is running a standard 68.5" axle. Both axles have the PRO 1550 steering knuckles installed, both JK's are running Trail Ready bead lock wheels with 5.5" of back spacing and with 13.50" wide tires.
Although the extra 4" of width isn't necessary for a standard coil and shock setup or even on a bolt on coil over system, Cindy and I would still run the 72.5" XD60 Cindy even if we weren't running an EVO DTD if only because it offers a nice, wide, lower center of gravity stance and without having to run wheels with very little back spacing. That being said, if you like a factory look, prefer to have your fenders cover your tires or need to because of state laws, going with a standard 68.5" width will get the same job done so long as you aren't running a coil over kit like the EVO DTD. Obviously, Rubicat is running trimmed factory fenders so her tires are sticking out quite a bit past the flares but as you can see on the Dynatrac JK, it's tires are tucked nicely under the Mopar hightop fenders.
An added benefit of the PRO 1550 knuckles pushed far into a set of Trail Ready bead lock wheels with 5.5" of back spacing is the amount of clearance you gain under your axle.
Of course, this is to say nothing about the protection your lower ball joints will have from the rocks as well.
As you can see here, the new XD60 front axle also comes with a built in ram assist mount and while ours doesn't have one installed yet, it can be outfitted with an EVO skid plate.
We absolutely LOVE the new XD60 differential cover with its significantly larger 7/16x14 grade 9 bolts that can be tightened up to 85 ft lbs. of torque to and are completely recessed in the cover.
For comparison, here's a shot of the Dynatrac JK with it's standard 68.5" XD60, running PRO 1550 knuckles and Trail Ready bead lock wheels with 5.5" of back spacing. You can really see the 4" narrower stance here.
In this shot, you can see the optional EVO skid installed to help protect the PSC ram.
Being that the Dynatrac JK is running a standard coil and shock setup, it can run a standard 68.5" wide XD60 and still have all the same benefits provided by the PRO 1550 knuckles and while running a 5.5" back spaced wheel.
Here are a few more all around shots of both Rubicat and the Dynatrac JK.