Thanks guys. I did not know they made a "door panel remover tool." I already have some of the fasteners though because I've replaced three window motors in the last nine years. Wish I'd had that tool then.
I popped the bottom seat out of the back just to get a look at everything and it looks just like you say, so I will give it a shot first thing tomorrow. I really appreciate the help. I had no idea where to start with the speakers.