Ok, well...
Front component speakers: ~$135
CDT cl-61's from djdilliodon. He is an authorized CDT dealer, i have bought from him...great guy. His aim name is: djdilliodon
Some people say CDT is big here, which it is...honestly b/c it's good. I have not found a component set that can beat it for less money! I've owned CDT, diamond audio, and alpine component sets...and i've come back to CDT!
Component amplifier: ~$65
http://ikesound.com/product-product_id/1013
Profile offers the best mix of quality and price, one of the best you can go with in your budget. I've previously owned two clarus amplifiers, and my friend owns one, and i have one in my girl's car right now! Absolutely no problems at all with the clarus line, great for the price.
Subwoofer: Resonant Engineering SE series OR Incriminator Audio Lethal Injection; 12"
http://www.reaudio.com
http://www.incriminatoraudio.com
or
2 12" IA 187 series...2 12" RE re series
Less than $190 no matter which you go with...as low as ~$170
-For both companies, call for direct pricing!
Both are great woofers. Do a search here and you will find tons of info from people who have bought them! I have 4 8" re series in my girl's car, i have heard the LI series as well as the SE series. All are great, depends on if you would like one or two woofers.
Subwoofer amplifier: Profile cl800 ~$120
Again, good amplifier in your price range.
http://ikesound.com/product-product_id/1018
Depending on which subwoofer(s) you go with...it may be $510, all of it is shipped prices as well! (Could be $500 b/c shipping may be less where you are!) This setup use the stock CD player since you hve a 6-disc CD changer as well! It replaces the front speakers with quality component speakers, powered by an amplifier giving you MUCH better sound. You can decide to leave the stock rear speakers in for a little rear fill. I gave you a few choices on subwoofers...any choice would be great, they'll offer a gret balance of quality sound and still give you some loudness. My choice would be the LI 12".
As far as installation! You said it didn't need to be included, but i'll go ahead and give you some info on what you'll need.
Line Output converters: Two @ $18...converts your stock level outputs to RCA's.
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=14932&item=5733129910&rd=1
Four guage, multi-channel Amplifier wiring kit: $36
http://www.knukonceptz.com, great place! I've ordered from them as well.
http://knukonceptz.com/productDetail.cfm?prodID=KOLAK44
Ported enclosure: A ported enclosure tuned low will give you the best rounded sound.
For 1 12", 2-3 cubes ported @ 30hz
For 2 12", 3-4 cubes ported @ 30hz
DO NOT buy a pre-fab box, check out gnomeaudio.com if you don't want to build yourself. BUT, i highly encourage you to build yourself...not hard, and much cheaper. We can walk you through it, i learned how to from here also. I can even design and layout a box plan for you if you need! Buy a box: $100-200, build a box: Less than $30 in materials
With items listed above, You can install yourself! Do it, it's easy...we can walk you through it, and you can ask questions here!
Well, there is my proposal! Great, well rounded sound that fits within your budget! You WILL be happy with the sound...it'll amaze you for how much you paid...no shop could match it! Good luck, feel free to stick around here and learn! peace
NG