thanks for pic....yes now i know which one you meant.
custom job and have the exhaust bent under neath the bumper?
then just attach a splitter to it and it may just look awesome lol
pics as requested mate!!
right this one is of my setup: Primera airbox with induction kit fittind to end with cold air feed running to it!

as you can see they are longer than standard k11 air boxes: underside

top

inside

i would like to add another cold air feed as i said above.....to the opposite side and run it behind the drivers light and then to grill!
hope this has helped