Hi, I'm new here, name is Dave.
Some of these export situations were purely political. Pre WWII in Australia there were no major auto manufacturers but there was a strong local body builders. To support this industry there were high tariffs on fully imported cars but much lower for those who imported chassis, engines etc while using the local body builders and assembly. The three were Ford, Holden and TJ Richards. This why we have some quite different early bodies than you in the US. For example, I have a 1933 PD Roadster with a holden body, a body style never made in the US that year I believe
Post WWII there was a great push for complete local manufacturing culminating with the "first" Australian built car in 1948, Holden 48-215. The Holden was and is still produced by General Motors Holden a division of GM. To encourage local production, Tarrifs were kept high but did vary due to politics. In Australia (and most Commonwealth countries) there were less tarrifs applied to British Commonwealth manufactured goods. So to reduce duties Chrysler (and other US manufacturers) exported out of Canada, a commonwealth country and generally assembled in the destination country.
An interesting exception was New Zealand which I believe imported their cars directly from the USA.
Here is a pic of my roadster.
