I have been looking into the K&N and the Airaid. Anything that fits the Flex Eco or SHO will fit the Sport. K&N does have a better tube but no half box to sit in. Airaid has the box but has a plastic tube.I am new to this forum and I have a 2013 Sport as well. Can I get some more info like part numbers, makes, models, manufactures, etc...?