I've laid hands on a Green filter. It seems like it's a quality piece but, the price is up there. I'm not too sure if the extra cost is worth it.

As far as filtering, Smiley you have taken your truck to Uwharrie several times and taken the air box up and looked at the intake tube (past the filter) and it's clean as a whistle.

They may be the newest and the greatest but comparing different oil/cotton guaze filters is gonna be about the same as comparing the differences in different paper filters. There may be some differences but are they measurable?

What is the goal here? Better filtration? More performance than the K&N? I doubt either will be worth the change. Now if you were talking swapping from the paper and the greeie wasn't twice the price....well maybe.