Moving springs back 1 "

Since its nearly inpossible to get a wrench to the inside, you would probably need to pound or weld in longer studs. What effect this move will have on the rear shackle links is still a mystery. Those may have conflicts in movement.
I would like to set my rear axle back about 5/8" but I would rather cut and piece the hangers to do it. Same applies to my engine and trans. I would need to cut and piece those mounts to move 5/8" forward.
Let us know how it works out.