Some more specifics - Chrysler, Dodge or Plymouth? We're assuming full size here too... or not?
Parts Catalogue for 1964 has exploded dash parts shown in the Body section, and the AC dash stuff in the AC section - if you don't have one it can be downloaded for free from Parts Manuals – MyMopar
You will need to look in the Parts book for pictures. Look in the area of Section 23, Pg 192 or so. If you don't have the parts book, download it from the link I posted earlier.