ive not long fitted new speakers to replace the standard ones and to be honest its a waste of time. dont expect any major improvements from 4inch speakers. you may also need to remove the plastic supports that are on the screw holes so you can bend them in a little to fit better. im going to take them out and fit bigger components on the door down behind the plastic holder thingy in the corner because ive got manual windows so need room for hand movement lol. its up to you but if you like your tunes with a bit of a punch then you will be very dissapointed.