While replacing the window regulator, I decided to replace the old door panel insulator with this newer version. These are about twice as thick as the ones I had installed many years ago. As a result, they required a lot of trimming to allow getting the door panel back on, especially around where the wire harness for the door lock and windshield wiper switch have to "tuck in". You will have to trim out around the door handle area to get the wires in and trim below the the bracket for the two screws that hold the door panel in where your fingers go when you pull the door shut. If you can't get the panel in tight enough, you will not be able to put the two screws back and probably have a problem getting the door lock lever back into place.