1965 dart gt spring question

Update: I know it's been a while, but progress on the car was halted for a while, had alot going on that needed my attention. I measured the springs and the front segment is 20 inches measured to the center of the spring and the back segment measures 35 inches to the center. I did attempt to flip the shackle but no dice, it would swing down a bit but would not flip all the way over. Anyone know what kind of springs these would be?