bit of a dissapointment to hear that actually, just ordered meself a zetec climate. cant answer the first 2 questions, but i can the other 2. yeah, you could buy your own speakers, and tbh, theyre not that hard to fit - i done it to my old car. just drill the rivets out and its a straight swap. and you will need anything higher that 50w per speaker. any less and you wouldnt get a decent sound would be crackly and that.