Early A-body package tray

Did you ever find one that fit? I just went to install one from TNT (REM) and had the same exact issue.
Hello, I work for TNT Auto Parts. What was stated below is correct, some of the late 1964 models took the 1965 package tray. When placing an order it is difficult to determine which package tray you need. You are always welcome to call us at 586-489-0148 and we can help determine the correct one you need. REM has always been good to us and is wiling to help. We do not want you to keep a part that does not work for you, please give us a call and we will get you taken care of.

Laysons helped me out. It seems like later (~Octoberish) 64 models used the 65 package tray.

So for later 64s the tray should be 53 1/2 inches at the window and for earlier ones it should be about 50 inches.