hey guys i just wana know if its possible to fit 2 x 12 inch box in 98 expedition without taking the 3rd seat out ? I tried q logic 12 inch box and it didnt fit, the 10" was fine. if i make like a custom smaller box for 12" will the subs have enough space, and will they pump right or should i just go with 10" ? which one will pump better ( i need SPL )