Nick - as far as I know that's the ver.1 typhoon - that has been discontinued due to a fault (the bracket connecting the pipe to the chasis shears away with vibrations)
Search here for typhoon to see many stories of this happening. (jiberjaber, scarface, mike morse and more)
ver.2 is a chrome pipe which comes with a heat shield and a more flexible (not welded) bracket.
Keep an eye out for the bracket shearing and if you have a receipt contact K&N as they should be able to sort you with a free replacement.
EDIT - here's a thread from 2005 with details.