This is fairly easy to do - once you get the door lining pulled away from the door panel. There are plastic catches that will reconnect the panel to the door - you will likely get scratched up by them during the process of removing the speakers, fyi. The biggest pain is keeping the door panel pulled up while you are removing the screws that hold the speakers in place.
Best to have a second person helping - but if you don't - figure out someway to do so. The exchange of speakers is typical once you have them unscrewed - splicing the wires to the new. The wiring codes can be found on line pretty easily too.
Good luck! More.
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