hmm i'll take a look at the amsoil one as well.. yea definately gonna do the drop in i just want it because of the fact that you can clean it. down the road when more parts are available for the 08 4.7 i will do a CAI just because it'd be pretty complimentary to a full exhaust since I do wanna do long tube headers and what not but for now i'll pick up either the k&N or a amsoil filter