Get the rock crawler wedges, I had the same problem. The real best answer is to cut your spring purches off, rotate and weld them back on the axle. But that's much more inovlved.

For the rear axle, you want to rotate the axle to get a good pinion angle. But that is the opposite direction of what the springs want.

 

I think I got like 1/2 to 3/4" lift max. Not much at all.

 

I got 1/2" additional height with the RK wedges. They fixed a similar problem on my Jeep.

 

For me the bolt was hitting the spring, the nut is very close. There is to much thread so I put a washer on the head of the bolt and spaced it back and now it doesn't hit.....so far.