as long as they are long enought and fill the rusty gaps they are,
the better ones are these,,
http://raybuck.com/c-54806-repair-panels-ford-1991-2001-ford-explorer.html
Can you even get the full rockers anymore? I know they have doglegs for the 4 doors. They didn't make them, or the doglegs for my 2 door. I had to fab my own inner rockers and doglegs.
This is what I purchased:
http://www.rustrepair.com/PICS/979141R.gif