Are the spring rates on YJ lift kits the same in front and back? What if they are the same? I'm looking at some 4" Rusty's front prings to put in the front and back of my YJ. They are 310 lbs/in. They should give about 5.5" lift on a YJ :)

Alot of companies have an extra leaf on the rear packs. You sure about 310lbs? that sounds seriously stiff, I know touch country are around 220-240 and work great, a little soft in the rear but otherwise good. My BDS springs I think I figured to around 250 or less can't remember.

BDS YJ springs are: "The spring rate on a YJ spring is 325/sq. inch."