Just out of curiousity, with a towing package, can you see the transmission cooler, or is this something internal that you wont see unless taking apart transmission?

 

You can see it. Take a look at my gallery, you can see what an 04 looks like that has the towing package.
Also just about all have the trannie cooler, just a bigger one with the tow package. Also fluid is cooled through the radiator.

 

You can see it, on mine you got to lay on the ground and look up in there. The power steering is up there too.