I'm not sure, but it's on the list of inadmissable cars on the registrar of
imported vehicles website:
http://www.riv.ca/english/US_vehicle_admissibility.pdf

Jay S

AFAIK there are no specific list of cars that are not allowed to be imported
into Australia, but there are some nasty fees involved in doing it, and a
few modifications are needed. Cars over 15 years old are cheaper to bring
in. Of course it's difficult to just drive them in, so cost of a boat trip
has to be factored in as well.  To be a viable proposition, you need to find
cars that:

1. Are worth little in the foriegn market, and a lot in Australia.
2. Require little work to meet Australian engineering standards.
3. Are in a country not too far away.

There really is not anything much in the USA or Canada that fits here.
Vehicles that are viable though can be found in Japan! (Remember Australia &
Japan are both RHD) 15 yo Skyline GTs & Miatas in good condition can be
purchased for peanuts in the land of the rising sun, and still hold value in
Australia.  A 1990 Miata with 50 Thousand miles, in pristine condidtion and
well optioned is still worth 10000AUD here, (7600 USD). They only require
intrusion bars to be fitted into the doors & a safety inspection before
licensing in Australia.  A few car yards here in Perth are full of imported
Jap sports cars.

There is the odd Corvette or other classic yank tank on the road, but with
all the hassle of shipping  & moving the controls, its really only
enthusiasts who do that sort of thing.