If you want to buy a new 16" rim read here for comments by Otto:
https://www.stovebolt.com/ubbthreads/ubbthreads.php/ubb/showflat/Number/1474938

During the last 30 years, wreck yards in my area of NC (Piedmont) have been pulling out the Camaros, Mustangs, classic cars and trucks. They are sold to buyers, some in foreign lands regardless of condition. The price of scrap metal went up and unfortunately the old lead sleds were crushed. The last Flea Market I went to in Charlotte was scarce of original stock parts. Mostly new reproduction stuff for our era of trucks.

The specs for the 1953 wheel is in the second link. I only have a cut-n-paste (attached picture) of a 1965 wheel. As far as width and backspacing, read and come up with your own conclusions.

Note from Moderator: OP is not asking anyone to buy anything only asking where to find a wheel.
Attachments
1965 Wheel Specs 01.jpg (39.52 KB, 276 downloads)

Last edited by Justhorsenround; 11/21/2022 4:33 PM. Reason: Removed unnecessary comment
"Adding CFM to a truck will only help at engine speeds you don't want to use."
"I found there was nothing to gain beyond 400 CFM."