Right guys ive just brought a headunit thats 4x40, im also looking for 6x9s (can anyone recomend any.?) but i wont be fitting a sub or amp so ill need 6x9s that have decent treble and bass.? my main question is what to do with the front speakers.? can i just change them with any other speakers.? will any other speakers fit.? i have a 1998 1.3 starlet sportif. Id appreciate any help please. Thank You