Box design for 4 Sa 15's help!

[AKT6190]

i have 4 sa 15s and i need a box

my max dimensions are

w- 40"

h- 25"

d- 40"

i want the subs up port back

they are going into a 99 escalade

i want to do hairtricks so it needs to move a lot of air

i was thinking about a box like steve meades,

the big square port but i dont know how to tune it or whatever.

any suggestions or help?