I put in a 33kGVW cooler in front of the condensor coil. Measured 17x13x1.5" sort of big for an XJ. I disconnected the tranny from the radiator all together.
I installed a filter with a temp port built in, under the hood. Summit racing, has a couple of vendor types. (If you have removed the airbox, lots of room for this there)
Gauge went in the console behing the t-case shifter (01 XJ).
Works like a champ. Tranny has only hit 180 twice when I was running fire roads in 4 low and drive ie slipping the converter clutch a lot. The engine runs cooler as well, with the radiator not having to absorb the tranny heat.
No pics, sorry, but very easy install, less than 2 hours after I decided where to put everything. One note, hard mount the cooler the the front clip as opposed to just poking the plastic strips through the condensor/radiator. With all the vibrations from off roading, a solid mount up front will make it last longer.
Derik