Joe Caristo and I recently did a 1979 Fleetwood.
You take down all of the moldings, remove the dome light, and maneuver the cardboard headliner out of the passenger side door. It looks unlikely, but that's how we did it.
You don't have to fold it, bend it, or (eeek) cut it.
This guy made the job much more complicated than it needed to be.
Brian