Here you go (see below).
Sorry that it's a bit mangled from the parking brake rubbing against it for the last several years, but it is what it is. Also note that the reproduction grilles are incorrect because they're the same dimensions all around. In reality (and you can see this by looking at the drawing in the AIM and the part numbers for the screws and the spacers), the grille and speaker actually faces slightly toward the occupants so the grille stands out more in the front of the car than the rear.
The speaker shown below is an NOS 7303331 that was on ebay a while ago.
Ed