If you're going to use a "drop in" disposable paper filter element, just about any reputable brand (i.e., Purolator, Fram, AC, WIX, NAPA, etc.) will suffice. Not much difference in quality (IMHO) between any of them. Usally just a matter of which one is on sale at any given time.

I've got the factory setup still on my coupe as I prefer to keep things stock looking on the Crossfire. I do have the K&N re-usable "drop in" filter elements. I typically take them out,, clean & re-oil them every couple of years. Gas milage holds steady at around 22-23 around town; 26-28 on the highway during weekend trips and to & from XFire GTG's.

Later,