I wouldn't use the radiator cooler. They tend to fail and put coolant in your transmission. I'm dealing with this with my son's truck.
The stock 6.0 trans cooler nearly is a direct bolt in, and I have those in stock.
cncfab.us
The stock 6.0 trans cooler nearly is a direct bolt in, and I have those in stock.
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...
