Drill hole in front spring hanger

9/16 is the size of the bolt The bolt is a special bolt. When the bolt is trough the hanger The shank of the bolt should be the same lenght as the bushing in the spring. The threads are short. I bought Longer 9/16 20 grade 8 bolts and cut the length so I had just enough threads for the nut.

Also the shackle end takes the larger b-body shackles . you will need to encrease the size of the holder in the rear also . Cut the tubes out of the a-body brackets and increase the size to the same size as the rear eye in the spring. I couldn't find a pipe or sleeve that size so I made them in the lathe. I have some from my car that were left over from moving the hangers into the frame doing a inboard spring kit if you need them. Steve