Think I finally figured out body alignment diagram

[72restocuda]

So if you have been following my posts they have been about how high the rear part frame rails at the rear crossmember sit in relation to the front part of the rear crossmember. After a lot of help on this site I think it finally sunk in - use the alignment diagram, which I included  - as long as the points E and F sit 13" apart that is what a 71 cuda should need. Using a laser level aimed at the middle of the lower front leaf spring shackle bolt hole and measuring down from a point 2.75 inches in front of the middle of the rear shackle bolt hole these 2 points should be 13" apart - when I do this everything lines up pretty well including the full rear quarter panels. I hope this helps someone else.