I had a 2006 LJ Rubicon. I set mine up for camping with family, as well as hitting some of the harder rock strewn trails available, such as Rubicon, Dusy, Dishpan, etc... Not exactly an overloading rig, but capable for sure.
The basic Jeep was a 2006 LJ Rubicon, with a 4" spring lift using AEV progressive rate springs, an Nth Degree tummy tuck, 1" body lift pucks, Hanson bumpers front and rear, running 35" BFG KM2's. I then added a large rear tire carrier & rack from Hanson, on board air via Viair 450H and a 2 gallon tank. I had all kinds of skid plates from Nth Degree and Currie due to rock crawling. I also had the Nth Degree spring relocation brackets from the rear spring perches to correct the lifted geometry. I had a pneumatic disconnectable front sway bar, and removed the rear sway bar altogether. I can't remember the vendor for that. It was the same vendor that provided an upgraded heavy duty steering rod set up. The rear rack also carried and axe and a hi-lift.
I had a Baja 540c GPS mounted near the rear view mirror that worked awesome, and a custom built 2 piece load platform in the rear. I had well over 6' of lay down space with the rear seat out of the Jeep, and about 14" or so of load and lash space behind the seat when it was installed. Overall, it would fit a family of 4 and a dog for week long trips, but man was it packed to the gills to do it. However, a trip for 2 to the Rubicon for a few days with food, clothes, tools and parts, was no problem and stored very handily. Also, I ran power to the rear for an ARB 50 qt fridge. And I had Camelbacks strapped behind the front seats to provide drinking water on demand. Everything worked quite well.
Load platform pics are here:
Jeep LJ Load Platform
Baja540c GPS mount:
Rear Tire Carrier and Rack:
I also had a little 4x6 trailer that was scratch built and allowed us to take 10 day excursions to Utah, Eastern Sierras, etc.. That was handy:
But without the trailer, I still was able to carry quite a lot of (ie: way, way too much) stuff:
It helped that my kids were small at the time: