A couple of vtr streetfighters and a pic i came across of a vtr race bike in japan notice the different airbox/ intakes/velocity stacks (trumpets,bell mouths whatever you wanna call em
Those velocity stacks look like ones you can buy from H Power(an austrailian company).They are machined from a solid block of alloy and are supposed to give you a few extra ponies throughout the rev range,here's the catch....they're £160!!!!,bit steep for all you get plus no-one ever gets to see them!