Just a quick FYI--
The twin turbo RB26DETT motor you speak of came in the R32, R33, & R34 models. It is, however, exclusive to the GT-R, not the non-turbo GTS (RB20DE/RB25DE) or single turbo GTS-t (RB20DET/RB25DET). The motor itself is not all that amazing, but trust me, when you put 1.7 bar into any motor (1 bar = 14.7 psi) it'll go, and no, you can't do that without internall engine modification. People do however drive aournd on 1.2 bar all day every day with even the factory turbo(s) and headgasket which makes for a pretty fast car (low 13's/high 12's). Try runing 25psi into a built 4.6L stroker and see what kinda power you could make. Now that I think about it, maybe I'll start saving my $ for when I get back to the states:roll:
There are a couple of different diffs and both would SUCK for anything other than street driving (to include proffesional racing). There is the viscous diff(s) in the R32's like mine that never really wear out or break because the are basically a "fan" blowing diff fluid at another "fan". This obviously has no parts to wear out, but it also doesn't do very good job for getting both tires spinning. The newer diff is the "active" diff which is a computer controlled cone type LSD which works good in theory, but breaks a lot and most people upgrade to the aftermarket if they want real power. The nice thing about the viscous diff's though is you can do 6k RPM clutch drops with all wheel drive like me :guitar: and you fly usaully without breaking things (I have gone through a clutch already though).