I bought the tru cool and one day after it was delivered I found a 6.0 cooler on craigslist that was cheaper so I bought it.
Here is a nice pic for you to think about. the bottom is the 6.0 cooler, the middle is the trucool max I bought from bob at diesel site and the top is the sorry excuse for a cooler that was on my truck (NO stock cooler either!)
If you are interested in the trucool, PM me. I dont need it anymore since I got a 6.0 cooler and I am going to install that little one in the front grill in line with my 6.0 cooler.