Part number and codes for all 87 TR including GN.
Left Front code YX #14080054. Service part number 14080054 discontinued
Right Front code YW #14080053. Service part number 14080054 discontinued
The codes can be found on the SPID label in the trunk. There may also be a tag still on your springs that has those codes and numbers on it too.
1986 and earlier use a different set of codes.
I dont have any specs on the rates.
