I do wonder how many arrived in Port Moresby and how many are left, given the nature of the place it's hard to imagine cars of that "status" surviving for long..
But a quick Google search and I found what appears to be an early 240z in PNG area. (Rabaul and Malaguna Rd in particular it would appear).
http://athomeatriverbend.blogspot.com/2016/05/its-almost-half-century-ago.html
Interesting to note is the early style fender mirrors that were also seen on HS30 00004, early D caps, but no vents in the hatch! Interesting. I wonder if the car is still around today?