Just did this tonight - very easy job. I got a cooper Z200 filter, bought it ages ago, was less than $15 I think. The old one when I blew through it spat out blackish petrol...I wonder if my rubber hoses are deteriorating a little. Might start replacing them..
Car is about 12 years old an R33. Previous filter was in for about 25k kms from previous owners records
z200 was a direct fit
I just made sure engine was relatively cold undid bottom hose on the filter - a bit of petrol backflowed from the filter, not much though..