Been digging around the site for awhile now and there are surprisingly few recent threads on this topic. K&N is an obvious aftermarket option, but I've read the threads here (and elsewhere) discussing the potential for throwing codes due to oil on the MAF sensor. There are lots of posts about aftermarket cone intakes, but I'd rather stick with the stock air box, so obviously those are out. Years ago Tone sold Green Air Filters on his site, but I just checked and the only filters they list for any 2000 Isuzu are for the Hombre (). And Amsoil's website only offers you the generic Wix filter, so none of their high-performance panel filters are an option.

So my question is what are panel filter alternatives are out there, and which do folks think are best? I'm not against ordering the OEM part if it's the right answer, just thought I'd do a little digging first.

Thanks!