This is what I have:
http://http://www.downeyoff-road.com...rCleaners.html 171FI-T002000-04 Tundra/Sequoia Air Cleaner (to stock tube)
and really like it. The sound is nice (acutally sounds like a V8 now) and gained some throttle response. I did not loose any MPGs. I won't have a rig without a K&N anywhere.