Found a picture of the Tacoma. That "door" the faceplate is attached to is the garage door / sunglasses opener.
For my 80, I'm using a RAM mount screwed in where the rear view mirror was. Everyone has the opinion as far as the "optimal" location for the radio, but I like mine up high. It's out of the way most of the time, and when I need to look at it I don't really have to take my eyes completely off the road. And no risk of spilling my latte on it.