I highly recommend this cone filter for you 3.0 owners. It's a little spendy but worth it. It's a Autophysics Big Mouth. Go check out www.autophysics.com
and check it out, it's pretty nice. Just thought that I would throw this out to you guys that don't have a cone filter yet of some sort.
This along with the Phenolic Spacer was an excellent modification, I highly recommend it, especially if you have a good exhaust system.