If you don't find it in INVENTORIED junk yards (using the likes of car-part) you can easily find one in the non-inventoried places... there are a ton of U-pick-it 'yards in Colorado (and last I checked that was a full days drive closer to AZ than GA).. I can't believe you wouldn't find one in a local AZ junkyard.
There are even "semi-inventoried" meaning they post pictures and online list of vehicles (but not individual parts) like LKQ. LKQ specifically does not list anything in AZ, but if you are on the west end of AZ then one of their Cali locations would be even shorter drive (and I found a '91 in my very first search):
https://www.lkqpickyourpart.com/inventory/thousand-palms-1289/1991-ford-ranger/
Google around for "auto salvage" "scrapyard" "junkyard" "vehicle recyclers" etc etc - get creative with search terms because the politically correct BS out there has forced them to change names / listings a dozen times.