Hahaha, that's so sick! That is kinda what I was thinking about doing when I build my next rig. I learned metalworking from working on my jeep so I know how to weld, bend tube and metal plate, so I have to tools to build something nuts, I just don't have any ideas thus far. Right now I have a stock tranny cooler from my jeep that I have laying around so I will probably use that in my water cooling setup.
Well when you think about it, watercooling the pump actually makes sense, it's probably one of the biggest heat generators..Imma look into getting me one