It's funny they think RB26 transplant = GTR
Twin Turbo on a RB20/25 = GTR
yet seem to conveniently forget little things like Atessa, wider flared guards for wider rubber, getrag gearbox, center guages etc etc.... the list goes on.
As I said before if you have a beast of a GTST be proud of it, take joy in the fact that people will underestimate it's potential and speed. Enjoy the looks on others faces when your GTST blows them off the track. Don't devalue all the work you have put into it, by trying to claim it is something it is not.