There are a few car racers in NZ with the deep pockets/ sponsorships to run these cars. They tend to prefer the rear wheel drive race cars rather than a tin can front wheel drive.
The question is how many of the few adopt the new spec NZV8 and at what rate they purchase the cars and then pass them on to teams with smaller financials.
The spaceframes are different in the way they are repaired compared to the steel shell TCRs. So spaceframes have better appeal to some teams.
Racers are gamblers by the very nature of the sport. Any vehicle can be turned into scrap. If the V8's cannot stand alone, they can be part of the NZGT series etc, so not a total loss.
https://www.gtrnz.co.nz/