Piggi3

Im needing some help i got a 04 blazer 4door i made a box 38x20x26 port 6x18x24 i got about 7.38 cubes with all displacement out i have the subs firing up and port firing into the driverside wheel well. The subs are about 10" from roof is this to close im not moving alot of air and its not that loud. I got a dd m4a and 4 nsb 90s mechman 270'alt and 4 runs 1/0 welding wire. Is the box to small for this Also inhave 1 more m4a can i strap them at 1 ohm or will i grenade them with that much power