I have complete Sony Xplod setup with 2 10" 700 watt subs with their 4 channel adjustable Xplod Amp (hard to find but Circuit City might have it) The amp is Red with Clear cover over the adjustment knobs and even with just 2 10's it thumps enough to shake the seats and provides nice base even with stock speakers. I plan on adding a Xplod component system with tweeters and 6x9s.
Pacific Green Mystique/SVT Exhaust/TSW Wheels/Soon to be full Xplod System