Deffs go with upgrading the fronts, get a decent quality amp and sub and you'll be set, I sourced roughly 3 grand worth of stereo equipment brand new for about $700 online all delivered, same stuff you'll see in the boxes here, just without the markup. I would say that's you're best bet, if you can wait maybe a week buy online. Then get someone well known to the forums to install it for you, or you can always YouTube it and try it yourself if you're keen.