Pete, I feel your pain. That's why I added the scam page to my website.
The door speakers only came with the AM/FM radio right? This was an option available separately from the deluxe interior, and GT's did not necessarily come with deluxe interior nor did they necessarily come with AM/FM radios.
Also, since my fastback was not a GT, and did not have a deluxe interior, but did have the AM/FM radio with the door speakers, the door was precut for the deluxe interior door lights, but they were not installed. My doors also has about 8 or 10 hard to duplicate square holes for the plasting mounting pieces for the finned door trim.
So, yeah, this "GT door" missed the mark in so many ways...
That may be it. I don't have my Marti report in front of me with what it was called. I think it was stereo though. Don't recall if it was 8 track or not. I'll email myself a reminder to check at home tonight unless somebody else chimes in.
Not that it really matters, its a bad ebay listing any way you look at it.