if you want good enough bass that wont weight your car too much you should look at shallow subs, think vibe do the black series or something and alpine do the new type r shallow subs, dont bother spending money on the front speakers unless you customise your door pockets and the behind the dash they are 10cms and face down so pointless really, for the rears just get some 6x9s and wire up some tweeters and uprated battery