well the needed to have 4 inches added to give them the proper length, then a lip had to be continued from the middle to the back so they could attch to the inside of my door panels because they were made for a 2 door, the ends had to be grinded down to nothing and cut to shape to my fender, then they had to be bodyfilled big time because they were horrably uneven. Finally a lot of primer and paint later there finished. For the skirts and all the changes it costed me about 900 canadian , which to me is worth is because it makes me original.