Did The R32 Gtr Nismo Edition Come With Rr581 Le Mans Group A Turbo's

[livewire]

As title states, just wondering if anyone knows whether its the R32 GTR nismo edition that these turbo's came on? I have searched but not much definitive information on them. I've read some say they came with standard gtr turbos, some saying N1 turbo's and some saying these larger, steel internal RR581 units. If not, does anyone know what these turbo's originally came on. I know they bolt straight up to the RB26 so unless they were simply an aftermarket or nismo factory option they must have been factory fitted units on something?

They dont seem very common which may indicate they were Nismo editon items being only 560 made.

Any help would be great

Thanks

[livewire]

Surely someone knows?