AA 4th order box help

[Painsorrow 0]

Hi all

Just wondering if someone could help me design a 4th order bandpass box for my AA chaos 12" ive decided i want this for two reasons. 1 i own a sedan with a sealed off boot and this is meant to be one of the best boxes for this application. secondly these subs are meant to be awesome in 4th order. i plan to port the box through the speaker holes in the parcel tray. ohh the car is a toyota jzx100. ohh i also plan to use this as my daily box.

thanks heaps.