It's pretty easy. The tranny already has a cooling line to the radiator, so it is just a matter of hooking up to that line, and finding a decent way to mount the cooler. Most people I talked to didn't think much of the zip-tie-through-the-radiator mounting system that comes with most tranny coolers.

Steve Carlson - 95 Trooper LS expo rig
Serenity now!