Safari Snorkel Air filter help needed

Hi

I have a GMC 6.2 fitted to my Defender 110 and when i brought it there was a safari snorkel fitted.The problem that i have is that it has no air filter fitted at all,Does any one know of some sort of inline air filter that can be made or brought.I have been looking at air boxes on E-Bay but dont know what size i would need not to restrict the air flow.

many thanks Simon

i think a VIPER performance air filter or a BMC one should do
Pipercross Viper Induction Kits

viper are good as they use a vortex system to pull the air through, perfect if your trucks pullin air through snorkel pipe

Hi guys and thanks for the reply. Been looking at thier web sit and they list loads, any idea what size I would need for a 6.2 diesel ?? Many thanks Simon