The Tru-cool is a decent cooler. Another very good option is the Ford OEM 6.0L trans cooler. It is nearly a direct fit on the 94.5-97 trucks like it is on the 99-03's. I've installed a few on the older trucks and I have custom made adapters/kit to go from the stock 5/16 lines to the 1/2" ports on the 6.0 cooler
03-10 6.0L Ford OEM 26 Row Transmission Cooler - 5C3Z7A095CA
DIRECT REPLACEMENT FOR 04-07 MODELS FITS 99-03 THAT CAME WITH SMALLER TRANSMISSION COOLERS. SOME MODIFICATIONS WILL BE REQUIRED TO TIE IN THE LINES FROM THE TRANSMISSION TO THIS COOLER. DRAMATICALLY REDUCES TRANSMISSION TEMPERATURES TO INCREASE THE LIFE OF YOUR CLUTCHES, TORQUE CONVERTER, AND...