well, not necessarily... those turbos look pretty tiny, but you have to remember that each turbo is only being driven by (im assuming stock displacement GSR) 900 ish CCs.

the problem with twin turbos, and you see this even with the monster power supras/skylines, is that it becomes more efficient to drive one big frickin turbo than split your exhaust energy between two turbos.

i will be able to explain that mathematically with fluid dynamics equations by the end of the semester