I've been over the ITR more thoroughly since the initial post. I checked the panel gaps, checked for paint mismatches, body repair & overspray, but could not fault it.
The body, engine & gearbox are definitely AuDM, as I was able to cross check them. It was originally sold new by Trivetts.
Judging from the interior, I think that this was a stolen recovered vehicle, as the interior panels show signs of having been removed sometime in the past.
Also, the Recaros look to be different ages, when comparing them to each other. After all the close examination, it's actually quite a nice example.
It has an impeccable service history, stock standard (apart from the Alpine head unit, and Koni yellow shocks) and it has absolutely no modifications.