Set Me Up With A Nice System

Well I have a 1991 Cadillac Sedan Deville. http://www.cardomain.com/memberpage/567557 I want a nice system in it when I fix it up. I'm looking for high quality at a mid-low level price. Im figuring 2 12"s in the back in a ported box(because this is what i have) maybe a sealed 10"(also what I have) I need some hints and suggestions. How would you set it up and how much would you spend. Now keep in mind i dont wanna spend more than 2000, because i am gonna buy an indash monitor with 2 headrests, and an xbox. so the headunit will be the monitor. Any ideas where to start?

first decide which head unit/ monitor that you're going to get, the decide which components, and amp for them. then sucs and amp for them.

i don't know what you mean when you say you have 2 12's ported and 1 10 sealed.....

i have 2 12" subs in a bandpass box, and then i have a sealed box for a pickup truck with a 10" sub. the HU is a pioneer, one with dvd, cd, tv, and fm. so about 1200 bucks. dont know what model