For 69 there was 3 AM/FM models, 2 underdash 8 track players, and 1 console mounted 8 track player. Theres an AM/FM mono radio, an AM/FM multiplex radio with an external multiplex unit (the bluelight stereo), and then theres a late model year AM/FM multiplex with an internal multiplex component (the Yellow light stereo). There is one version of 8 track players are for use with the AM and AM/FM mono radios, and one used with the multiplex radios. The mounting differences are determined by if the car had a console or not.
The AM/FM mono is model number 91BFP1
The blue light stereo is 91BFM1
The yellow light stereo is 91BFM2
The underdash 8 track player is 91BT411
The underdash multiplex 8 track player is 91BT421
The console mount 8 track player is 91FT211
In 69 there is only one version of the 8 track player that mounted on the console, and it was used with the mono radio setups, or if no radio was ordered. In 68 there was 2 different versions, one for the mono radios and one for the multiplex radio. If you ordered a muliplex radio, you got the two knob 91BT421 under dash mounted 8 track player wheather you had a console, or not.
If your going to buy a console mounted 8 track, make sure it has the arm rest cover pad included with it. They are not reproduced and are extremely hard to find. You can find moslty everything else on Ebay but don't be shocked by the prices. A console mounted 8 track player is going to run you between 500 and 750 for the player alone, a mono AM/FM is probably in the 400 to 500 range, and a multiplex setup is going to be over 1000 bucks complete. make sure you get the multiplex mounting bracket if your going that route as well since they are unique to the Camaro and are not reproduced either.