ok. i have a dodge neon so its a small car. i want to know a good sub or subs and amp i can put in it. i already have a pioneer premier deck and 4 boston acoustics car speakers. but now i want a sub. i was thinking rockford fosgate. now i'm leaning towards kicker. i was thinking 2 12" subs. but i need to know a good brand and what sixe of amplifier i would need and a good amp brand. also would i need a capacitator? please help and give me lots of details just not complicated details. keep it simple.