I have DD's '64 Dodge book, it has region & dealer codes for the HEMI hardtops (all shown as 440s).

it shows:
7 - company cars
6 - eastern region
7 - midwest region
8 - central region
2 - southern region
5 - western region

They went all over, with only two originally destined for the south.
Accounting for the 35 HEMI Dodge 440 hardtops, no showing for any cars shipped to Canada unless I'm missing something.