To each their own but I thought I would mention so that it here is no confusion ,a period correct part is different from a concours correct part. Just mentioning it because of the main focus of this forum is factory items and build technologies.
+1, which is why I specifically noted "offered by Ford".
Jim : As for your "Test", in looking at my Accessory folders, it looks like I scanned the 1973 in 600 dpi, which resulted in the page I was going to attach, being almost 6 MB ! Too big to attach.
However, in looking a little deeper (looking at my 1973-77 MPC), for 1973, the AM-FM Stereo Tape Player was only available in Full=Size Fords and Thunderbirds. The AM-FM Stereo Tape {layer was available for Mustangs from 1974-77 (and probably after that also).
Bob