You will need to pull the quarter panel. Drill the spot welds on the top rail as well as under the body. There are quite a few... You can either cut the few that attach the quarter to the rocker panel with a body saw/sawzall or you will need to pull the rocker with it as one assembly. I installed/removed my endcap/quarter/rocker panel as one assembly as that was how it looks like they did it from the factory. Quite a bit of work, but you can take care of any rust and paint everything before you reinstall it.