Joel -
I think it was also done by Yendor. Picture here.
http://www.trailmanorowners.com/foru...ead.php?t=6551
Quite a project. I don't know of anyone who would do it for you - you'll end up doing it yourself. The disadvantage, of course, is that it requires a certain amount of fresh water each time you flush. Not a problem if you are in a commercial campground with hookups - big problem if you are boondocking.
Like Dave (and most of us, I think) I use Aqua Kem, available and inexpensive at WalMart. And don't forget that there is a vent fan in the bathroom.
And no, I don't think you can use a blue tote as a holding tank. The "whoosh" is important for carrying away solids. A dribble won't do it.
Bill