Hi Andru, thanks for your response, to be quiet honost with you i just figured the HKS was the main filter to get besides the apexi, i had a HKS on my R33 and didnt bother looking into other options.
So you recomend the blitz4" pod, ,,does this straigth bolt onto the Z32 ,i was also considering the Apexi Pod filter (dry no oiled) from Access Auto in Vermont.I believe from the article you posted the Apexi is up there with the Blitz
thanks again for the info it was very helpful,
David