Eibach spring rates?

[nlsolja123]

is there anyone know what the eibach spring rate is and what is the mximun rate to use on tokico s/r's?

[zxtwou2]

http://www.teamzx2.com/showthread.php?t=1379

it's the third one down, i think. it has a linear spring rate, meaning the more it's compressed, the stiffer it gets.