Hopefully this clears up some confusion, the FE4 suspension (ZL1 & 1LE) use specific FE4 Control Arms or Steering links, how ever you want to call them. To answer your question, the rear FE4 arms are included in the kit however the front one's are not. I haven't heard from anyone looking for the fronts and I really don't have a comparison from the SS FE3 and FE4