‘63 gear ratio code location.
 

I’m posting this just as a reference to clueless guys like myself as to where to look for this code. A picture is worth a thousand words. I figured maybe it would help someone in the future. It’s on the right side of the differential down low. It took me awhile to find. Code is where the tip of my screwdriver is for reference. I did a search here and found no pictures of this location, just a description.