These are the rear dampers for an Evo IX...but I run them on my 240 because I use the z32 knuckle. I'm not afraid of doing it myself, but would defer to an expert to have the confidence of the job being done right. I do not drift but I do auto x,which is how I killed the damper. I'm fairly certain that the spring that I run contributed to the death of the shock. Regardless, I sure do appreciate the feed back.