This sounds like about the biggest no-brainer upgrade that I've heard yet for these trucks, since heat kills trannies and most people buy a SD for the towing capabilities. What about the V-10 cooler? How does that compare to the 6.0?
At any rate, many modifications to cars and trucks are a trade-off; you gain a little something, (like performance), and you give up a little something, (like economy or durabilty/long life). Whenever I find a mod that is win-win-win and doesn't cost a fortune, I'm on it like a hobo on a ham sandwich. I'm gonna get one of those puppies. /ubbthreads/images/graemlins/smokin.gif