Hey Kevin, the link you have posted is to a thread about the 4th film 'Fast and Furious' ,hence the thread title. Furthermore it reiterates this in the article: "This R34 started its life as a GTT rear wheel drive platform and was then recruited to become a stunt double for the hero car for the Fast and Furious 4 movie".
Several people on Gtroc have been told directly by Andy Middlehurst that two UKDM BNR34s were purchased by the producers of 2 Fast 2 Furious for the the film.
In the Fourth film i know Gtts were used as stunt cars ( as R34 Gtrs are nearly impossible to get in the US, and as such are too valuable to be smashed up), however, the original Hero car was in fact a Genuine r34gtr (albeit a 'Kaizo' car) and in the second film 2F2F , which is the topic of discussion, the Hero car was again a Genuine R34gtr. I would not be at all surprised if Gtts were also used as stunt cars for this film, however,for all intents and purposes the car was meant to be/ is a gtr, so what replica they used for stunts or scenes where the car gets damaged is irrelevant
Cheers