Its rapid in a straight line for sure but not that fast, I got my ass handed to me by a TVR Tuscan on the outskirts of Sheffield near Dore one evening a month or so ago. This was straight line stuff.
Once we hit the corners the guy seriously backed off and I was literally pushing him to go faster. In the end he bottled and actually slowed right down and let me past. Bit of anticlimax given that the guy initiated the whole thing. Still its fun smacking down the rich folks with £50k+ cars who don't really know how to drive them and all with a lowely Subaru 
So it goes to prove that a really fast car ain't everything.
As for the boy racer chaff that put stupid wheels, subs, neons or whatever other superfluous crap on their cars, well those guys or nothing but show boaters. I strongly believe in buying a car then leaving it as is, you'll notice the STi is completly stock as it left the factory, the only thing I've done is add 6 pots to give more stopping power. Want a fast car? Buy one and don't just make it look fast.