Good reply indeed. In Australia, rankings #4 and #5 are likely to be switched, or equal.
On the world stage, yes, the Nismo model would be worth more than the ADM.
Projected Sums Insured by Aust. Insurance Companies should be in 2015 in Renewal terms...
(for top of the line specimens) around...
* V-Spec II N1 - $95,000
* V-Spec N1 - $88,000
* Non V-Spec N1 - $80,000
* Aust Delivered - $78,000 to $83,000
* Nismo - $75,000 to $85,000
* V-Spec II - $53,000
* V-Spec - $43,000
* Non V-Spec - $33,000
Mods in my opinion (depending on what they are) might only shift those values north by a small margin.
That'll be negotiated I'm sure between the owner and the company.