Convertible Speaker locations

Because armrests for the rear seat of a convertible are almost always just ahead of the top mechanism and can't be comfortably used by the rear seat passenger anyway, Fox body Mustangs used that area for the mounting of 5 X 7 inch speakers by extending top mechanism enclosure forward to the door opening to create a compartment. The later ones (87 to 93) even made the extension as wide as the part enclosing the mechanism and totally eliminated the vestigal armrest of the earlier ones. This was relatively simple for Ford designers because all the convertibles used power windows, but still should be doable in A body convertibles without power windows by careful packaging and/or extending the window winder crank shaft.