ok, 2004 dodge dakota ext. cab. lookin to do 3 12" RE audio SR series. i have asked everywhere but here and never got any solid suggestions. i would need 4.5 cubes ported to 35-40hz, would a ported downfiring box be best or maybe a ported rear firing box? i am new to trucks and have no idea whats best for 12's in an extended cab. thanks guys!