While you CAN add a hitch to the WK2 after the fact, it is much better to get it with the factory hitch already installed. The hitch is a Class IV, the wiring is already installed, and any transmission cooler lines are added at the factory. Adding wiring afterward is a hassle, IMHO, and I'd rather have all of that under warranty from the get-go than to add it later. It is very worth it to have the towing package factory installed regardless what the stealership or others might say. I'd add that this helps at re-sale time too.
I'm not sure about the WKII, but I know my WJ was ordered (not by me) with a trailer prep package. This added a higher gear ratio, HD cooling and the trailer wiring harness, but not the actual receiver.
__________________ The Past
95 ZJ Laredo 4.0
00 WJ Laredo 4.0 & 4.7
08 WK Laredo 4.7 (traded for tin can) The Present
07 JK Unlimited Sahara
Where is the info on the load leveling rear shocks? I've asked about the load leveling feature and no one seems to know. How does it work?
Basically the shocks have a set center position (length) that corresponds to the desired ride height. When the average position (shock length) moves off of that point, valves open and close and the up/down motion pumps fluid from one end to the other which, in turn, adjusts the ride height. There is not much more technical info available. They are completely mechanical.
You should be able to purchase them over the parts counter, shocks are replaceable wear items. I dunno the part number off hand.