I have 2 4in in the doors and 2 6x9in behind the seats. the deck i have now is 35Wx4 and the rear speakers are setup so that they have 180% as much as the front speakers so there is even sound from all speakers. i have fiero seats im putting in soon that im putting in 3.5in speakers in so thats a total of 6 speakers. i'm also going to use bass blockers on them so the low notes dont come through them. and i also want to have someway of adjusting the head rest speakers volume with out adjusting everything else. how should i hook them up?