Thanks Carl! We pulled out some trim pieces and removed the headliner, pulled all the old fabric off, prepped it, sprayed it with 3m adhesive through an air gun and molded the material into place, then reinstalled. Degree of difficulty is all relative as I don't know how comfortable you are with taking apart the car or what mechanical knowledge you have...

It is difficult to get the headliner in and out of the car, but you must do it through the passenger side and it is a very tight fit just FYI