Ok I am the guy who did the test thing but I think I got it. Anyway I am putting a bathroom in the basement and I am considering being lazy. Their is another bathroom right behind the one I am putting in and their is a three and a half inch vent pipe coming from the other toilet sticking up yelling at me to do a wall mount toilet instead of jakhammering the floor. Would this work. The room already has a tile floor and I do not want to jackhammer if I do not half too. The wall is a 2 by 6 plumbing wall is that big enough for a wall mount toilet.