Anyboby know of any manufacturers (like Fleetguard) making any advanced airfilters that fit the stock airbox?


Donaldson is making an awesome one for F**D http://www.donaldson.com/en/engine/support/datalibrary/001220.pdf








Smokeymax

Is this what your looking for?


http://www.uniquemetalproducts.com/duramax.htm


I think there are several guys who have tried one.

Looks pretty good.