Squid,
this will only answer a part of your question. I would think the best possible way to go would be to buy/build the car in Canada, register it and drive it in Canada for at least a year and one day. then you can bring it in as a personal import and almost get automatic registration (I stress, almost).
Visit the DOTRS web site
http://www.dotrs.gov.au
As for a Daytona coupe, or 240Z/V8 as a daily driver.... you must have a sturdy constitution.
Cameron