AUDIO_BASSICS

I have a 1994 chevy suburban that i am gonna take out the third row seat looking at doing 4 of the killer 18" subs but i did my box work and came up with @ 14 cubes for 2 18" tuned to like 25hz the curve looks killer but i dont know how to add in the cabin gain... so i need help thanks guys i am trying to get this done for USACI FINALS since they are having them in my town this year