Alright, here we go, it's time to play with the big boys here:
Bass Amp:
http://www.caraudio.com/forums/ampli...00d-sale.html: sundown 3000 - $500
http://www.caraudio.com/forums/ampli...like-new.html: sundown 2500 - $550
explanation: These are two massive amps that will properly power the subs that are coming up.. not matched perfectly, because there's so many options, they're a couple ballpark estimates.. basically figured on about $500 for a good amp that does about 2-2.5k watts rms.
Sub/s
http://www.caraudio.com/forums/subwo...y-loaded.html: BTL - $580
http://www.caraudio.com/forums/subwo...io-12w7s.html: W7s - $550
http://www.caraudio.com/forums/subwo...hade-v2s.html: sundown nightshades - $500
explanation: Here's 3 great sub choices. The Sundown and the FI BTL are both serious business subs. They take 2k rms or more all day. These will, seriously, blow you away. In the right box you'll be the loudest in your town. The pair of W7s is a safe retreat if you like hiding behind brand names. As far as "well known" sub companies go, JL's W7 are among the loudest.. and sound the best, too.
Headunit:
you choose.... something you like in your budget with 3 pairs of RCA outputs will suffice. I like the Kenwood Bt945 from last year or Kenwood BT948 from this year. Shop around.
speakers
http://www.crutchfield.com/s_500SPR6...C.html?tp=106: Type R - 280
http://www.crutchfield.com/s_107MM65...1.html?tp=106: Polk - 230
Explanation: These two pairs here are beasts. Over 100 watts rms power handling is going to make a loud loud speaker. They're component sets, which always have a better sound than coaxials... Either of these would be a good choice if you want the music up front loud
2/4 channel amp
http://www.caraudio.com/forums/ampli...40-4-ohm.html: alphasonik 4ch - $300
http://cgi.ebay.com/KICKER-ZX350-2-2...tem4cf8b1fac5: kicker 2 ch - $120
explanation: If you want the music loud you'll need enough power to push those beefy speakers.. These are two good choices. The alphasonik is a massive 4 channel amp that will have lots of headroom even pushing the Type R speakers. It's a little overkill, but a quality piece. Plus then you have 2 channels to amp the rear speakers if you so chose.
The kicker would be a good amp to amp just the front.. and keep costs down. It'll make those fronts scream at you, then just use the headunit to power the rears, which don't matter anyways.
Sign up on caraudio.com and get to surfing the classifieds. There's TONS of deals to be had to put together a really, really, nice system for 1.5k. Everything I have here adds up to roughly 1.5k for you... pick and choose. You can't go wrong for subs with Digital Designs, Incriminator Audio, Fi, Sundown, or even the custom build ones that are beasts.
Amps for the sub look out for Sundown, American Amps.. I forget others.
For about 1k you'll get a great pair and be pushing 2 - 2.5k watts rms like I said. It will blow you away.
Then you'll have 500 to play with for a headunit, front speakers, and amp for those front speakers, etc.
If you open it up to 2k you'll be even more set because you'll have a few more options.. can get a top of the line headunit, not have to skimp on a speaker amp, etc.
Let me know what looks good, any questions, etc. It's hard to say "here buy this" since everything good is used and constantly being put for sale and bought up.. so you need to catch the deals when they happen. I got my 1.4k rms amp for $200, and a pair of Kicker L7's for $110..... which is loud... but those subs and stuff I posted are in a whole different league.
Keep me posted.