Puralator is good, it what I have on our vehicles. Also for air intakes, K&N is overrated as well and pain to tkae care of, whenever I bought a custom intake for a vehicle from them even after I cleaned it and used very little oil the maf sensors would get screwey especially on Fords from the oil coating it. I use Amsoil's new universal filters now that breath better and to clean all you do is basically wipe it down or use a vacuum sucker attachment, pkus you can adapt them to stock boxes or even the tubes used by K&N and others. Made a custom cold air unit with my stock air box with it, I noticed a slightly difference over the Mac intake I had, actually from the temp readings I'm running slightly cooler air charge since there isn't any chrome heating up/getting warm like the Mac.
