what a good shock and coilover combination need to know so i can see what to get. also my buddy wants to know whats a good spring/coilover for tokico illuminas? also how do u find out the spring rate on ground control coilovers

 

you can get what ever rates you want when you get GC's. If you are looking at used gC the numers on the springs tell you the rates you just have to decode it

 

my friend has tokico illuminas and ground control coilovers and there bouncy he wants to know if it could be the springs?