ZillaJoe--I just got my airbox delete bracket and some other things from Shawn (SBLT500)  It looks like a nice quality piece.  If you go with the uni dual layer they make a 6 Inch long and an 8" long  (uni part number UP-6400st and up-8400st)  I just ordered a AEM filter from Summit Racing part number (21-2059BF) that is a 9" long unit. Aem also makes an outer pre-filter to fit the 9" filter--its part number is AEM #1-4001.   I didnt check into the K&N filter numbers but I am sure they make a bunch.