69 300 convertible radio install

Just purchased a 69 300 and the orignal radio had been removed. It was sold with what was said to be the original radio but upon further inspection i dont believe so. It seems the radio i was given with the sale is about 8 inches deep and the conrols for the a/c blower are about 5 1/2 inches deep. Therefore i do not see how it would fit.

Was there a shorter radio for A/C cars? Also, does the dash have to be removed to put in the radio?

please see attached pictures for more clarification.
Attached Images
Author: pmschmitt