Fom the EPC ...
 1X  SPRING, FRONT (SET), RHD (USED WITH LOWERED SPORTS CHASSIS) (NOT USED WITH INCREASED PAYLOAD) (EXC.BAD ROAD PACKAGE) (EXC.ARMOURED BODY/HEARSE) (EXCEPT POLICE VEHICLE)  Y1000001-  90510279 3 12 034 1 
  
  1X  SPRING, FRONT (SET), RHD (USED WITH LOWERED SPORTS CHASSIS) (EXC.ARMOURED BODY/HEARSE) (NOT USED WITH INCREASED PAYLOAD) (EXC.BAD ROAD PACKAGE)  Y1000001-  90510279 3 12 034 1 
  
  1X  SPRING, FRONT (SET), RHD (NOT USED WITH LOWERED SPORTS CHASSIS) (NOT USED WITH INCREASED PAYLOAD) (EXCEPT POLICE VEHICLE) (EXC.BAD ROAD PACKAGE) (EXC.ARMOURED BODY/HEARSE)  Y1000001-  90541754 3 12 050 1
   
  1X  SPRING, FRONT (SET), RHD (FOR BAD ROAD PACKAGE) (NOT USED WITH LOWERED SPORTS CHASSIS) (NOT USED WITH INCREASED PAYLOAD) (EXCEPT POLICE VEHICLE) (EXC.ARMOURED BODY/HEARSE)  Y1000001-  90542292 3 12 058 1
   
  1X  SPRING, FRONT (SET), RHD (USED WITH INCREASED PAYLOAD) (FOR POLICE VEHICLE) (NOT USED WITH LOWERED SPORTS CHASSIS) (EXC.ARMOURED BODY/HEARSE) (EXC.BAD ROAD PACKAGE)  Y1000001-  9196176 3 
so they exist . but perhaps not on TC ??