My father just did the Jeep Jamboree across the Rubicon Trail.
He has a 5" lift on his jeep and said the trail is now so badly dug out that it bashed the crap out of his rock rails, and all of his bash plates. He is not one to ever touch rocks with those either, pretty good driver if I do say so. So I really doubt you could get an XV-JP, or really any stock jeep on that trail. He said there were a couple Unlimited jeep rubicons with 2" lifts and each one of them had smashed up something on every painted surface and one did damage to his hard top.
He also told me that he over heard several of the guides talking, and they said that this year was the worst they had ever seen the Rubicon Trail.
Shame too many people get out there without a clue, but they buy bigger tires and bigger engines and bigger axles and just floor it until they destroy the trail and get over the rock. I remember seeing a video of a LARGE group off WWII CJ2A's on that trail, and they were just going great on it. Never again I suspect.
"Do you know what a soldier is, young man? He's the chap who makes it possible for civilized folk to despise war." -Allan Massie