just going to throw this out here, if you're going to be replacing those, now would be a good time to do a body life on it if you think you ever would want to do that. Since its basically the same amount of work.
If you do a body lift kit, it should come with all new bolts.
1"body lift,1"shackle lift,2.5"spring lift
Flat cut fenders,4.0 auto, smitty rear bumper,35x12.5