I currently have two 10's in the back of my D behind the third row( i know thats nothing but still want to be able to haul stuff around being that im still in college) but am looking to upgrade the subs and the amp. i was looking at the rockford P310D2, are these good, and a amp to match them. also was wondering if there was any boxes that could hold 2 12's behind the third row cause that was my initial idea. whats the difference between a bandpass box and a regular box cause found a bandpass for my 2 10's and was wondering if it would better the bass or not. i also have my amp stored in the in floor compartment and i've notice that it gets warm in the compartment, is this a bad place for the amp?