With a lot of pushing and pulling, the hanger will slide into the insulator. All that's left to do is align and tighten. Doing so will change the clearance substantially between the tailpipes and the bumper. Someone should stand behind the car throughout this phase to ensure equal positioning. Rotating the muffler just a fraction of an inch has noticeable effect in the rear.
Patience is very important here.
As before, keep an eye out for tailpipe alignment. Go back and tighten everything again. By this point, it should all be tight enough that nothing moves. Tighten it again. Have someone else check to make sure everything is tight.