There are no known actual spring rates documented.
REAR SPRINGS:
(EXC WS6) CODE (W/WS6) CODE
-------------------------------
1984 10029092 NWY (Stiffest)
10029091 NWX |
10029090 NWW (Softest)
1985-87 10030180 NXD 10034976 NYM (Stiffest)
10029092 NWY 10034975 NYL |
10029091 NWX 10034974 NYK |
10029090 NWW 10034973 NYJ (Softest)
from
http://www.calgaryfieros.com/OSGdocs/springs.htmlso when you say stiffer you are going to figure out where you are at and find your current code. If you search around theres a post on how to decode them from the fender tag instead of hoping the tag is still on the springs.
[This message has been edited by skywurz (edited 01-14-2021).]