Codemonkey82:

I replaced the stock PCM transmission, likely the one you have, with the "newer" PCM 80A transmission. The stock transmission had a 5" transmission cooler; the 80A required a 9" cooler. I had to reposition the 9" cooler so it would fit, see the photos. Very important: make sure the hoses attaching to the cooler are secure (they run seawater) but be sure not to collapse the neck because it is a rather thin copper. As to the green valve, please see CONTEST, H20 Wins!! in General Chat, where I specify the size and source.

As you request, here are photos with cover off: