How do you take off the face plate that shuts in your radio on a 89 Celebrity?

If it's like my 85 celebrity the radio is held in by 3 screws. These screws are located on either side of the radio and you've got to take the piece of dashboard plastic off to gain access. This piece of plastic dashboard trimming runs all the way across the dash and includes the vent louvers. It took me several hours to find all of the attachment pieces under the dash. Some are clip-in and some are cheap metal nuts screwed on to studs of the dashboard piece. It was such a pain to remove for me, I just left it off and use styrofoam cups to direct the vent air. But then again, I'm sort of lazy. Good luck.