Imperial Fuel Injection Conversion Kit

I'll tell you what I think this is for

I'm not aware of ANY dealer or factory efi - to carb changeover for late model stuff

"Way back" when, Chrysler Imperial had an early fuel injection that was was trouble from the start and THEY had conversion kits. This was somewhere around 57-59, Google Chrysler Bendix

If not photos, parts no's on the boxes. Surely there must be documentation that makes you think this? From what you are saying we can't know anything factual.

Here is '58 Desoto:

http://www.allpar.com/cars/desoto/electrojector.html