In the true spirit of DIY'ers I would put the car up on jacks open my door and start unbolting my sideskirt. I am pretty anal about installs as I lay them out in their config or number them if I am not putting them right back in. so as your taking the sideskirt off just keep going until its free. then take your new one and start from the last bolt and work your way back. its as simple as that and may only take like an hour each side. Body panels are a piece of cake when it comes to installing and removing with no directions. you just keep going until the panel is free