I agree strongly with your autopsy of the Fujita CAI. Part 2029. Guess what, After much consideration I went GM Performance CAI it's Size, Gm's hp Claims, Design looked like their seeking cold air without punching a hole in front wheel slinger like so many tuners Cai's are designed for. Im sold. From stock to K&N Cartridge to fairly well thought out GM CAI. I immediately realized a healthy jump in hp. Actualy rekindled my spirit. I must mention I never did use the stock Cone from GM in kit. Brother is a sponsered Kawasaki Kingpin. upon receiving, my little brother drove 80 miles one way to help swap and add. He came over on his Vintage Eddie Lawson 1000R with a bag of different size German Green Racing Cone filters. There it was. exact size/width/diamiter. I can't imagine the New GM cone in the bag is any less effective except maybe matrial in filter looks very much like the german one. I put the GM Performance bag over the cone (Microfilter bag) and have never looked back.