[deere4440]

Ok, i bought the 6.0 tranny cooler, and was wondering what i need to get to make it fit in there. I've heard it will bolt in the factory location of mine. But do i need some fittings or hose?? And what would be the easiest way to do the removal and install of the cooler. Oh and another question what is the best fluid to put in the transmission, should i flush it, or just drain it and add fresh.