I have to agree with greg, not only is the snorkle area smaller than the carbs, but it reduces the airflow down to the bottom one inch of the filter element. When I took mine out, that inch of filter was dirt, and the other 4 inches were clean as a whistle..
Not only that, the web page (which is real interesting by the way) is very general. All air boxes are different, case and point the bonnie airbox is so much different than ours! Side intake VS under seat, etc. So while some boxes, say on a daytona or whatever, may be specifically designed, I think ours is more just to fit than anything else.
