Got it from a mate off here that works at a car parts shop place thing ma jiggy. cant remember the website, but anywhere that sells K&N can get it for you. Really easy to fit, good intructions with pics too, took me 10 mins max!
Erm well the biggest difference is the sound, it sounds good from the inside as you can see from the vid (btw there were no windows open) but from the outside, it's bloody amazing!! sounds awesome, I'll try get a new vid this weekend for you.
As for performance, as most will say its probably not doing anything really, but I still havent sorted out a heat sheild or decent cold air feed to it yet but I think personally the revs are better, with the standard one the throttle felt a big laggy.