Well i got one if theses today, it's the one that you see on eBay and aoc. And all I can say is wow! The car has so much more power. I have full power till 7500rmp it pulls so much harder. It's deff a well worth buy if you want the power!
But you can see why when you remove the standard inlet manifold it's massive and soooooo restrictive. And only takes 1-2hrs tops to fit!!