best box design

[Ron E. Thill Jr.]

I recently purchased 2 sa 8" v 1.5 d4 subs but i want to up grade a littel so im going to put 4 sa 8" v 1.5 d4 subs in my gmc serria pick up.

i am asking if anyone knows the best design for a bow that would fit under rear seat. i am really wanting a design for a ported box.

PLEASE HELP WITH DESIGN OPTIONS WANT THEY TO HERE ME COMING. thank you in advanced.

[ToNasty]

What cab. And you will have to lift the seat

[Ron E. Thill Jr.]

why would i have to lift the seat its a rear flip up seat body style is a three door cab

[ToNasty]

Gives you more air space. Those 8s belong in a ported box

[Ron E. Thill Jr.]

i want a ported box design i can lift the seat if needed .

[ToNasty]

Is it a ext cab or crew cab.

[Ron E. Thill Jr.]

i can lift the seat its a flip up seat and its a three door its an ext cab

[Ron E. Thill Jr.]

i can lift the seat its a flip up seat and its a three door

[Ron E. Thill Jr.]

its an ext cab sorry this is my first real system i am building

[ToNasty]

With the seat lift it only gives you about 2 cubes. Not enough space for 4 sa8s ported. You can maybe make it work with 3 depending on the amp