Wow - I've been wrestling with this question, having already done nearly everything I thought was needed turn a factory new JLUR into a very street-able, non-radical appearing daily driver that could handle any reasonably sane trails.
Now that's what I've got - and it's proven even more capable than I could've dreamed. It's easily handled everything I've thrown at it, including a bunch of the harder iconic trails. Stuff I would have thought was insane until I started challenging it, and myself. So now I am torn between taking this jeep to the next level, with 40's on bead-locks, and on and on and on.... Or, just building a dedicated trailer jeep / rock-crawler. Crap, what have i gotten into this time?