Chris Dubuque in Seattle has just finished a giant research project about the changes and modifications that Citroën made to import the DS model into the USA and Canada. While there have been attempts at this before, Chris has made an amazing effort to do an in-depth review of the unique changes and modifications that the USA and Canadian DS models had.
Chris says it has been a labour of love to source and sort through all the information. Kudo’s to him for having patience and taking the time to do it.
If you think you have a pretty good knowledge of what is what with North American D models, or even if you are just a curious neophyte, check out this link, because you are not going to find a better description of their various configurations.