And I went out in the rain for that, so consider this my Christmas gift to you! It'* a perfect air-tight fit, but I'd still encourage everyone to go with the ADTR. If you've seen what I did to my airbox on my website, you know I've gained some performance, but I still expect the ADTR to be a vast improvement. The replacement filter alone is not enough, and even what I did to my box isn't enough.
About $50 for a K&N that you might not be happy enough with, and gutting your airbox (PITA....a few of us went this route before Hector saved us) or about 150 bucks for the whole cake.