Hey MD,
I like the write up of the locating procedure.
I wish I could have used that method but my car is on incline and not perfectly perpendicular to that incline. So, and maybe this will help someone else. I took out all of the leaves except the longest one with the attachment points, and I then put the locating pin back in its place and then rehung the leaf springs back in their original place. I have tacked the spring perches in the proper A body location with a 2* down bubble and put the axle back under the car.
This uses the springs to locate the axle and lets me get everything in place before deleting the springs.
Andrew