They are fairly easy to install. They do require drilling (see image below) It is easier with two people, but I did do mine on my own. Just used a jack to hold up the other end. Then started by doing every other hole until I got to the rear. Then went back and drilled the remaining holes since it was already on pretty solid with half of them complete. Made it easier than having to put pressure on it to make sure it was flush to the body for each hole.Has anyone had the RPI stage I side skirts installed in Dallas area,if so who installed them.What did they charge?Do you have pick's you can post.