. If you are willing to spend the cash on a Rubicon, save yourself the money and just buy a body and frame. You are going to end up replacing everything else anyway if you want a decent wheeling machine.
Sorry, wrong. For the benefit of the OP, I'll explain why.
A Rubicon will come with Dana 44 axles front and rear, selectable lockers, and a 4:1 transfer case. Whether it's a TJ, LJ, or JK...this is true. The only thing to be wary of is that the front axle tubes on the JK are not as strong as a "true" half ton JK. One thing to bear in mind...a Rubicon will set you back less than buying a lesser model, selling the parts, and upgrading parts to bring it to the Rubicon standard.
The stock Rubi setup will handle 33's all day long. Lots of guys wheel 33's and are very happy with them. Even more of us are on 35's and we think they're great. Nobody that know anything about wheeling in Alberta will tell you that you can't have a "decent wheeling machine" on 33's or 35's. No, you won't "point and shoot" the obstacles like some of the guys on 37's and larger...but you'll still learn a tone about wheeling and there are VERY few places in our part of Alberta that you can't go on 35's.
If you want to run 35's...cromo shafts will upgrade those 44's to a point where they will handle those 35's even if you're abusive. Even without the the cromo shafts, a lof of guys in the club have been running 35's for quite a while. A few had issues, and then upgraded...some had no issues, and upgraded when they felt like it....some are still fine on stock shafts.
If you want to move up to 36's or larger, Dana 44's may still work for you...but it'll depend on how you build the 44's, what powerplant you run, how you drive....yeah. There's lots to consider if you're going to run something bigger than 35's.