There is no hole. That's the problem. This new technoturdomatic reduces every taco converted deuce into liquid that flows down what looks like a 2 1/2" rubber hose. That way, you can theoretically repeal some of the anaconda laws of physics by placing the toilet anywhere you want and just running a hose to the black tank.

Old design - figure out where black tank fits, place toilet directly above it, design the rest of the coach around it.
New design - design coach how you want it, install turbo-chop-o-matic wherever you want then run hose to black tank.