Here's more info and a video on that 16" wheel, it does look about right.
https://www.etrailer.com/tv-Demo-Dexstar-Tires-and-Wheels-AM20766.aspx

Another option is 19.5" though those wheels are harder to find, or more expensive. Tires are pretty heavy duty, good load rating choices.
Some new options, none look right for an old truck. http://www.ricksontruckwheels.com/wheels-gm-25003500srw.php
Here are some old ones I found and will use on my 1 ton, they can be found on some bread trucks and other 1 ton stuff in the 60's and some later.
https://goo.gl/photos/1mdcjv4QLqPJdKLa7
These wheels take an 8R19.5 tire which is about 32-33" tall, a good look for these trucks I think.


•1951 GMC 250 in the Project Journals
•1948 Chevrolet 6400 - Detroit Diesel 4-53T - Roadranger 10 speed overdrive - 4 wheel disc brakes
•1952 Chevrolet 3800 pickup
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"First, get a clear notion of what you desire to accomplish, and then in all probability you will succeed in doing it..." -Henry Maudslay-