That cooler is for a heavy truck. It should be a plate-and-fin style small radiator (about the size of the intercooler) but with small hose connectors for the trans fluid lines. It ought to be very similar to the Ford Escape setup shown here...
I haven't taken apart the console, but from my experience in my previous cars, its usually pretty ugly under there. Think a mixture of unfinished carpet, sound insulation, glue, wiring harnesses, and painted metal.
Dimensions are difficult on it because it is an odd shape, with lots of angles and bevels. My tentative dimensions with my calipers are: 57mm width, 84mm height, 75-78mm depth (tapers from bottom to top on a concave radius from feeling around in there).
I hope to have better dimensions of the...
Great find, I got a similar price and also placed an order. They added more rail size options as well very recently, they didn't have them all before.
An FYI for anyone else looking at Tonneau Factory Outlet, the website doesn't show the latest and greatest stuff (aka most Maverick options...