LT 33 - from the same article, at the top, third paragraph - " In fact, this upgrade works for any truck with an Eaton HO52 or HO72 axle (3/4 or 1-ton trucks, 1947 -1972!"
Lets found out what you've found - I suggest you take a look at the carrier you've found and provide at least one part number off the ring gear or the pinion gear and I'll research it for you and provide the information on what you have found. Note, an HO72 carrier ( pumpkin ) will definitely fit your application. Many bolters have made this swap. Suggest you PM John Millman and or Denny Graham, two of the authors, and ask for verification if that will help.
Get me those part numbers.
Ron