ok i am going to take out my old rear speakers and put in a mid but im not sure about what to do, is midrange only 4 inch and below and then mid bass in over 4inch? if so do i want bidbass or mid in the back. i havent found any regular mids that are 6 1/2 s so im not sure.also im gonna get kick panels for the front but they only come in 6 1/2s wouldnt i want plain mid in the front and not midbass? thanks alot. later