A-Body Shackle Angle
I did a little more research in the subject, and found this. This of cause will put the leaf spring forward. 1/4 of an inch to be exact. I doubt the Ramchargers Guys made these offset brackets other than the production car brackets, when it comes to this measurement. On the other hand one never knew with those guys :)
Well may be we have someone here on the board reading this, and can tell if the original SS-cars had the front offset hanger spring eye on the same distance from the frame , as the production cars front hangers.
It´s more likely though, the kids that set up the tool today, don´t pay enough attention...