Can I get some "Real World" opinions...from the actual experience of correcting a "neautral" angle(straight up and down)to a "corrected" angle of 30 degrees forward(top of shackle)? I'm VERY curious as to the difference it made in the 60' times! I am talking about Super Stock springs. My angle is at this position because I'm using the 002/003 A-Body springs on my '69' GTX....and apparently the rear attaching point has to be moved forward 1-1/1/2" Thanks in advance for your information! Randy B.