If you're going to customise the housing, why does it matter? I'd get halogen ones and retrofit HID/LED projectors in there.
If you have D2R (xenon) headlights, bonus would be the HID ballast (so you throw in D2S projectors and away you go).
Standard engine + turbo + ECU is fine for street driving (restrictors removed so you get about 12 psi).
But the GT-R is a completely different car even with just N1 engine tuned (as in, -9 turbos and tune).