How are you gonna use this car? Drag or street or a little of both. Cause I don`t know of any that are emmision legal. I have never run one but I do know this. You WILL loose all bottom end tourqe. As a short runner or in this case NO runner will kill bottom end tourqe. Now i`m not going to debate tourqe vrs. hp or several people will jump on me. If you wanna make good hp then you gotta make tourqe first. I went to my internet browser and type in "box intake" in the search bar and came up with a lot of info and Trick Flow makes a "bread box" intake.