Picture contains what you'll need to replace everything for the rear speaker option. I bought the rear speaker OE AC Delco replacement from YearOne approximately 10 years ago. I aid around $70 which I still think is way too much for a single crappy 6x9 made in Mexico. Label is on the box. The speaker grill comes unfinished and I used a low gloss black that I have used on many other items throughout the car that matches factory paint. The cardboard enclosure has the flaps outward when you get them as I believe that is the way that the Camaro has t installed. You can see from the earlier picture of my 69FB that they are folded inward.
If anyone knows where I can find a speaker connector so I can wore this up it would be a big help.