SuperStock spring tips.

Not sure if someone mentioned it, but FWIW, if the rear shackles are are straight down or pointed wrong, one can help the angle by fabricating a square/rectangular spacer to put between the shackle mount and the frame. This moves the mount (and upper shackle pivot point) towards the front of the car You just have to use longer bolts to compensate for the tickness of the spacer.

I think some people are still getting confused when others talk about angles from either the frame mounted bracket/pivot or spring eye pivot points. Just look at the pics.