went there 2 yrs ago with a built cj, 3/4 ton axles, (44 front) some kinda fancy high dollar axle u-joints (wanna say OX, but not sure). he spent the entire 2nd day replacing front right axle shafts, and ball joints. he was running 38's i believe. that being said, i had a yj with 44 rear, and 30 ft, on 33's and had no troubles, but, i didnt try the trail he exploded on. depends on how many tools you are bringing, and how good you are at gauging your trails.... they got mild to retarded..
Personally no way in hell id go farther than 1 hr without a trailer. even if you dont break on the trail, you have to make it home after a lot of abuse and possibly unseen damage.