"On my 2006 SRT with stock air box I went with the Green Filters, they are excellent direct replacement filters. They say the greens give more air flow and better filtering than the stock filters.
Knuk, What Hiss says is true abour replacing the stock OEM filters with Green Filters but if you want a better performance improvement you should install the K & N Filtercharger Kit and replace their filters with Green Filters.
Hiss, As of now K&N does not make a direct replacement filter for the SRT factory air box, but may be coming out with them any day."
Green Filters does have Green Filters to replace the K & N filters that come on the K & N Filtercharger Kit. Our AtRo Sealed Ram Air Induction Box System includes these Green Filters in all our kits. I have them in stock and they sell for 149,95 per set of 2.
You can see them on my web site at:
http://www.members.aol.com/AtroRacingTeam/PRODUCTS/AtRoRacingsProductCatalog