Yeah it does sound very impressive on that video, certainly much louder than my BMC anyway.
The pipercross kit would be an option but the only thing that puts me off with them is the actual design, they are not very easy on the eye compared to the BMC and K&N kits.
Thanks for letting me know though bradley
If you can replace the Octopus air feed with a more free flowing pipe then you should certainly see some benefit, at the end of the day an induction kit is only getting the same amount of air as the standard airbox anyway because its fed of the air feed in wing.
I was also thinking about getting an Oil Catch tank, again not for performance but they look cool under the bonnet and serve a purpose so I might get one at some point.