Topic says it all. I'm getting ready to buy a new one as mine is pretty beat up and old (beyond cleaning, and I don't mind spending a little cash) and most of the ones out there that are good are about $50 (K&N, AEM OEM etc) and I saw a ZEX one that has an N2O port on the filter found it for about $80 online, I was thinking about upgrading to N2O one day and wanted to be able to sell my intake when I sell my car.

So anyways, what's the tube diameter on this badboy, and what is it on the V2, hopfully, if I ever got a V2, it would be interchangable.