75 911S is correct. Don't mess with the bellows/bellows nut on the car. See his point seven above.
"7. Remove the bolts holding the lower quarter extension to the body, remove the bolt that holds the support arm to the lower extension. It's easier to remove the extension with the bellows and bumper in all one piece."
Yes, Detach the side skirt lower bolts, then the side skirt to fenders sheet metal screws.
Then the main rear bumper four big nuts on fixed bolts
Pull back bumper and at the same time shove down the side skirts.
Take it off in one piece with or without the bumperettes.
Leave those bellows accordions alone while on the car...unless you like misery.
Pretend its an IROC one piece.
