I noticed etrailer had tranny coolers for between $30 and $50 with all the hardware. I planned on getting one as I've always been concerned with high-speed mountain driving on long steep grades with an AT. Seems like cheap insurance and probably would be cheaper than having someone vent the Kilby's. Besides cooling, it would be good for the AT, as there would be more AT fluid in the system, keeping the tranny cleaner and cooler between flushing. For severe usage like towing or mountain driving, I think a tranny cooler on a AT vehicle is a cheap wise mod.
'01 Kaiser SC'ed VX #0867