In an owners manual that I have, there is a reference to an optional 20 gallon auxiliary fuel take that is mounted under the drivers and passengers seat. Do any of you have a boat that is outfitted this way? If so, would you be kind enough to post any appropriate pictures of such a tank. My boat does not have one, but I an thinking about trying to retrofit it for one. I am assuming that Mueller made the auxilliary tanks since hey made the main tank. By the way my boat is a 2002 193 dual console.