True, I'm just deliberately being an arse here.
Although, it doesn't make much difference to top speed, much more to acceleration. Small car gearing does take you close to the redline in top IME.

Anyway, given the rate of increase of air resistance with speed you need an epic power up to seriously alter anything at the top end.

The skyline is a twin turbo, yeah, but one per 3 cylinders, similar to the 300ZX system but on a striaght 6. I wasn't really being clear but I was differentiating between twin and sequential turbos really. Poster below is right about the last generation RX-7, it was the first sequential turbo production car I think, I'd forgotten that. But that engine was witchcraft.
( the mighty badger Aphrodite, on a bar stool, by your side, Fri 20 Aug 2010, 16:38, Reply)