I think those springs you ordered are going to be very tall. Those numbers are 6" lift on a LC80. Stock LC80 coils will give a 2nd gen 4runner about 4" of lift so the coils you ordered could give 10" of lift! Only time will tell. Tuesday I'm getting in some OME 863 which should lift my back end 5.5" to match my SAS front lift. I'll post my results when I get them.

But I seriously doubt that... I'm more concerned about flex, than height due to stiffness of the springs... 
Hehehe


