I am under the impression that a Z/34 or Euro 3.4 steering rack has a faster ratio or higher-effort than the regular 3.1 steering rack. My '92 Euro 3.4 has morning sickness, so I'll need a rebuilt rack shortly.   The two parts houses I contacted (NAPA and CarQuest) show two racks, the "soft ride FE1" rack at $80; and the "except soft ride" at $120. This is the same for both the 3.1L and 3.4L Luminas.   I thought the 3.4L dual-cam vehicles got a "special" rack different from all the others.