Alot of times you can just add a little extra bass and change the whole dynamic of the sound, for instance putting in a 10 or 12 inch speaker with about 500 watts is easily added to the car with not much trouble. go to subthump.com and you can look at prebuilt boxes amps and speakers and the wiring harness you need to be close to plug and play, and it would be so much cheaper than putting in a bose system... i added 2 10's with 500 watts to each one and it sounds great and the bass is not too overpowering... just my .02