I took my door panels off last week to do the same. BE CAREFUL. I broke one clip on each side. One side actually broke the piece on the panel itself so it's toast. They are a nightmare to get off. Once off, you should remove all the clips still in the door, and reattach them to the panel. That will make the panel easier to pop back on. If I ever need to get to the speakers again, I'm thinking of cutting the panel around the speakers and making my own access hole there. It's ridiculous how Ford designed this thing on the 4-door models.