Worst case, you could probably also order them
from Digi-Key or Mouser.
Not sure what their Canadian shipping prices are like.
Worst case, you can use individual pins (IIRC, sames as 5.25" connector)
and mold your own insulation around them. On my first one, I just wrapped
each pin with electrical tape (which is a risky way to do it)
Heatshrink sleeving is probably better than insulting tape [1] for this
and would probably be OK for the DC rails. I am not sure I'd risk if for
the mains feed to the motor though.
[1] Mot one of my typos, it's what I generally call it...
BTW, 8" drive power requirements are not completely standardized. I
needed different connector? and one different voltage to use a Tandon 848.
I';ve seen at least one 8" drive where the DC power input was a
single-row hreader plug at 0.156" spacing.
I had access to LOTS of 5.25" bare pins and used connectors, due to my
previous partnership in Elcompco, making and peddling 5.25" 2 drive units
with smoked plex covers.
AFAIK 5.25"-type power conenctors are still easy to get new. So are
similar size pin and socket contacts.
-tony