1.   A better way to seat the bowl is by tightening the nuts on the closet bolts.

2.   This is the distance from the wall behind the toilet to the two closet bolts projecting up from the floor flange.

3.   Turn the bowl upright and lower it slowly onto the closet bolts.

4.   When you remove the old toilet, the flange will still be screwed to the floor with two closet bolts projecting upward through slots in the flange.

5.   You will have to buy new closet bolts, as they are not part of the hardware kit that comes with the new toilet.