hmmm... wait, none of those ones on egay are good for me, i got a 2'' 1/2 inlet. Will keep an eye out though!
Anthiron 路
there should be a little dome thing with the intake on the underside with little swirling fins to direct air in a circular motion to force particles to the outside of the dome.
if u cant find one u could get a standard aircleaner (one of those ones with the alloy top to stop rain getting in) and whack that on.
Boozer 路
Put a fairy cake on it. Works real good!
there's a place in Yatala that specialises in donaldson aircleaners and stuff that will be able to sell you exactly what you need.
pod 路
get a snorkel top from a 4wd and pipe it up to near your roof line