The Beast is back and patched up. The main cooling fan is on its way out and its a 2 speed job and the low speed isn't working. A new MOPAR fan is $700 and there are no aftermarket ones available. OUCH. The solution (albeit temporary till I get the funds) was to swap the low speed and high speed wires over on the fan so that the it kicks in earlier. However the A/C is now ICE cold and I have my wheels back. I'll be keeping an eye out on ebay and craigslist in case one comes up.
The Jeep forums suggest replacing it with one from a Ford Taunus but all th installation guides involve putting a switch on the dashboard to manually turn the fan on and off. That smacks of even more of a bodge job than swapping the low/high wires over!