I googled it and found this on the Wiki.
Optional trailer towing packages were available for handling trailers weighing up to 3,500 lb (1,588 kg) that included a weight distributing (equalizing) tow hitch, seven-connector wiring harness, wiring, auxiliary transmission oil cooler, 3.54 axle ratio, and required the optional heavy-duty battery and automatic load-leveling air shocks.
Also I've been in an Eagle wagon that towed an Eagle SX/4 on a car dolly through 3 states. The wagon had the 4.0 head conversion and AW4 from a Cherokee. We would have never attempted it otherwise and I will say I was pretty scared a few times on I-70 when we were passing some triple hauler semis. Those things give off some strange wind currents. So what I'm saying is unless you are dolly or flat towing some really light vehicles a short distance I'd say don't try it.