I tried to hook up linkage rod on rear springs and found the rods were too short. I had suspected this for a long time because the rear end seems to be sitting higher than front end (measured at front of front door sill and rear of rear door and found rear to be 2" higher). I had springs re arced and I believe the gave them too much. They have 8 leaves and seem pretty stiff ( you have to jump on running board support to make them flex any). The arc hanging on car with body jacked up is 7 1/2" and with weight of body 6 3/8". Length of rear shackle is 4" c/c. Spring pack is 2 1/4" thick. Anyone know correct arc, number of leaves and length of each leaf (may have been built up for hauling moon shine or whatever)? Could the spring shackle I purchased be too long? Need to lower about 4" (see picture of shock linkage) to hook to shock and have travel in both directions(now you have to pull shock to bottom of stroke too even hook up). Will have springs re arced but need this information if possible.