Let's talk about Super Stock springs

I used P/N P4452986 for the bushings. As for the bolts. I ran into the same thing and I bought them new just a year ago. I just put smaller bolts in it. I have had no problems at all. You cold allways use grade 8 bolts.

S/S springs are designed to control torque roll.
provide equal bite on the rear wheels
limit axle whind up
not lock up the rear but allow it to move
keeping the rear planted
thay try to pick up the car's body which pushes the rear end down planting the tires.