That is really weird, if its engineered and import stamped I would assume they would accept it, why wasnt the 350Z ADM? wouldnt that have been cheaper?
When I took my rolla to the NT, I was worried they would not pass mine, cause of the cage being welded, harnesses and seats cause of silly people doing the dodgy, but cause it was engineered here in QLD, it passed, they spent an amass time under the car, checking all the bushes, steering and braking system
*edit, that would include corollas perhaps?