Hi Trevor,
Many thanks for this information. I will double check but I believe the car has wooden floor boards. This would means the car was assembled in Australia.
With information posted by David (post #21) it would make sense that a Canadian-built engine was installed in the car. It is probably the engine serial number
C18HF**** that led Chris Sanders (RG#127) to declare it manufactured in Canada.
What still puzzles me is despite that I do not have full owners history, I did trace two US-based owners in Illinois back in the 80's.
Maybe a previous owner shipped it from Australia ?...

Many thanks David for providing the final and binding verdict
