I got two 12'' AW120rT audiobahn subs for my 2003 civic. What are the specs for the box size for this sub? I was wondering if i will be able to put in 4 of these and if it will poundharder because some people say its no point because there is going to be no room to make each of the boxes according ot the specs oif you got 4... plz let me know, thank you