Thanks for the link to your project site. The pics are great. Could I ask if the tank vent just ended inside the dinette, or does it exit the side of the trailer to the outdoors?
The extra freshwater tank is the same size and at the same level as the the standard unit, so you'd have to pump grewwater into it.
The trailer has dual propane
tanks, dual freshwater tanks, and no graywater or toilet facilities, but it has the large fridge
. I think the owner was an avid backwood fisherman. There are a number of loose and missing rivets, too, and it is pretty "used" for a 2000. I'm betting he boondocked and took it on a lot of rough backroads in northern Minnesota...