If you want my honest opinion, I don't think the H3 in stock form is up to running the 'Con.
#1. The visibility really sucks. I don't think I'd run serious trails in one even with the doors taken off. It may be doable with a spotter most of the time, but how much fun is that?
#2. It would be better with a front locker, but could probably do it without it.
#3. It definetely needs some serious armoring to rear quarter panels and underneath.
#4. It needs someone to make a decent winch bumper for it.
All in all, having driven the 'Con several times in both directions I'd say don't do it, unless you want your rig smashed up pretty bad.
I watched a friend of mine in a 6" lifted XJ with 33s, lockers fore and aft rip the side out of it trying to follow us TJs one April when the 'Con was rough and handn't been travelled much.
I didn't buy my H3 to run trails like Rubicon with. For one thing, Little Sluice is a lot more intimidating when your in it and there's 3 dozen red necks heckling you
-C