Need help identifing a distributor

I have two brand new distributors that I cannot identify. I think they are Autolite/Prestolite units. I believe they are from a '50's era Plymouth, Dodge, or Chrysler 6 cylinder. Both are identical. They have IAT 1032 stamped into the bottom of the housing. From the base of the mounting plate to the ned of the shaft is approximately 6-7/8". The drive is flat, no gear. There are no id tags or other numbers on the units. Any help iding these would be a great help. Thanks in advance.

 

Still looking for help with id.