I have some rust on my sideskirts near the wheels (front and rear) of my Classic. Can I just get some new sideskirts like from the Stillen kit to replace the old ones? I really have no idea how the JDM or Stillen ones attach or if they just cover up your old ones but I thought I would ask. Instead of having a new piece welded into the old side skirts I thought if new ones just replaced the old ones I could just take that route. Thanks.