I am in the process of doing the same thing. From what I understand, you will have to remove the entire plastic piece, to include the headliner. BE CAREFUL! This may not be reseated to look as it was originally. This process will also include removal of the seatbelts, working around the rear window, etc...etc....
In other words...
It's a pain!!
Hey dont sawzall nothin man , its actually easy i just did my 97 chev you gotta first remove the top panel its on clips so be gentle i did break a clip but not a bad deal, then you have to take the side buckets out of the side, then theres 2 screws when you remove the ashtray take out your handle, take off the seatbelts its as simple as a hex bolt, then just pull the panel it will eventually just pop off, there is a panel also on the bottom you may wanna remove as well, i never even took the whole panel out i just pulled it back enough to get at the old crappy speaker and put some nice kickers in. also a tip for yaz, on the back of the panel remove the decayed netting that way youll get better sound and you can see the speaker it looks better.
I think I may sawzall the speaker grate out, remove the 4x6 factory and re-install an aftermarket 5x8 with a nice-looking grill that lights up! I wanted to do this originally, because I think some of the grills are really nice looking, and SHOW that you have upgraded. I plan to talk to a couple of shops before I begin my demolition.
Remove the door panels
Both dash and rear panels use 4x6 in speakers
You don't need to remove front door panels, the speaker grills come out.
if you are talking about the extended cab, you have to take the 2 panels out and be careful doing so or you can break them.
4 inch on door panels and 5 1/2 in the back wall
The 1996 Chevrolet Camaro takes 6.5" speakers in the front and back seat speaker panels, and has a small amplifier in the trunk that takes a 3" subwoofer. Hope this helps (:
coloradofans.com pass it on.......
If the panels are like the 95 and 96 models, you don't need to remove door panels....carefully pop the grill covers off the door panels...there is a speaker mount behind the grill...remove the 4 speaker screws and your done. Start with the top of the grill and pull gently downward. There are metal clips on the cover and plastic hooks to the side which all hold it in place. Slow and careful is the name of the game here.
if it is a extended cab like mine, you have to take the seat belt screws out with a torx tool, then the right panel and the left being very careful because you can break the Plastic panels. you also need a clip tool to take the little plastic clips loose, it takes awhile on the extended because it does not take much force to crack the panels.
1967 to 1971 will interchange. 1972 will fit but has different inside door panels and hardware.