Truckernix,
I think you answered the question. That certainly appears to be the radio that's sitting in my truck.
I appreciate your diligence in trying to determine what it was from, as I didn't think it would have been an original AD radio.
Might try and bid on that one, and see what I can do to make one good one out of the two. I do get a buzzing sound out of the one I have. Can't really tell yet, whether it's working or not, as the tuning buttons and knob don't appear to be working, the attena also leaves something to be desired, but at least it powers up and make some noise.
Thanks again for your help. I'll probably be picking your brain to see what I can do to make it work, now that we believe we know what it is.