I went to circuit city.com last night and looked around at some of their car audio supplies.
I picked out what I thought was the best for a descent price, let me know what you think. This is for a 97 Eclipse.
Pioneer In-Dash CD Player $200
Brand/Model: PIO DEHP4400
Kenwood 2-Channel Amplifier $300
Brand/Model: KEN KAC929
KENWOOD 6.5 in. 2-Way Car Speakers $70
Brand/Model: KEN KFC1677
PIONEER 6 x 9 in. 3-Way Car Speakers $100
Brand/Model: PIO TSA6975
ALPINE 10 in. Car Subwoofer (x2) $120 each
Brand/Model: APN SWS1040
I don't know much about car audio, I just went by the sound quality ratings, let me know if there is anything better