Originally Posted by Musclefan21
can't be because behind my seats are smooth as glass, no sign of speakers ever being there and i trully believe that my seats were never replaced

Behind the seat in the shelf. I drove the Firebird in today or I would take pics. The factory woofer was behind the seat. There is a small opening about the size of a baseball on both sides with plastic grates on it. Again you'll understand once you see pics.
On to the door handles, It's very possible that whoever put them on didn't put screws back in the door. There are 4 tabs Front, Back, Top, and Bottom. That hold them in on each side (left/right) They were challenging to get off when I could see the tabs, I can't imagine how difficult it would be if you could see the tabs. Again pics help, and luckily for you I believe I have my old handles at home that I can take photos of when I get home.