subs have always been trickey n the 1200 utes, i am going in 2day 2 talk 2 an audio shop that i deal with about getting custom firbe glass boxes made up behind each seats. I have been 2 talk 2 them and they claim they have put 8 8inch subs into a datsun ute. pretty full on i reakon. will let ya know how i go, as for the other questions, do a search in the search box as these topics have been cover many a times before