I have asked in the past so to speak about thd Pontiacs in the Tri-years. It seems that lhd cars up to 1957 were pulled-off the line at Pontiac, MI plant and then taken to a small building where they were converted. I can imagine that this was also done with low-volume special models such as diplomatic orders which required flag mounts on fenders, etc. I have wondered if cars could have been alrgely built but minus dashboards and then had them added-in later? The 1955 rhd US Pontiacs had the '55 lhd dash transposed and the '56 and '57 cars the '56 dash transposed.

Can I please scotch the suggestion/rumour that cars were duty-free between Comonwealth countries? As a consequence of the 1932 British Empire Conference, it was agreed that duties would be reduced by 1/3rd beteen countries under the 'Imperial Preference'. The problem was that even with 2/3rds of a tariff the US factories could still sometimes offer export prices that meant that the landed price was not much more than that of Canadian cars. Ecoinomies of scale and all that!