I have a 600$ Limit.

I need everything to make a car sound good and subs.

I need the following going inside a car

2x Subs 12s

Deck

Speakers

Box

Installation

And if I'm missing something please let me know

$600 with installation won't happen unless you buy crap.

if you decide to install yourself let me know.

I'll say without installation

What kind of goals are you looking for?

without installation you could go with low end alpine or rockford fosgate gear. or soundqubed

http://www.sonicelectronix.com/item_73715_MTX-TNE212D.html 130$

http://www.sonicelectronix.com/item_94886_Hifonics-ZRX1016.4.html 170$

http://www.sonicelectronix.com/item_76468_Kenwood-KDC-BT558U.html 110$

http://www.sonicelectronix.com/item_64184_Kicker-40CS654.html 70$

This is the build I had in mind, you guys like it?

So mix matched that drives me nuts.

Same brand is not always best when putting a system together.

Stay the f away from kickers.

You want cheap good subs?
Ones that will still pound and won't break the bank. Buy 2 American bass xd 1000 watts.

Get a mb quart 1000.1 mono block amp

I have kicker speakers in my friends truck and i enjoyed them they sounded good.