Jim,
Take a look at the front spring mounts to make sure they are still good. On Bugsy my '68 the DPO reassembled without correct size bolts and front shackle/mounting plate was actually rotating, There was a 1" long V shaped hole in all 4 mounting holes. When I'd go into a turn the axle was actually twisting underneath me as the mounting plate shifted. Made for some interesting handlig as car set up for a RH Turn, would lean, and then shift again as the axle rotated. BTW, new spring hangers did not fit, needed the grinder to get them to fit up into the body, 1'2" too long on welded in captive nut. It is a big mother of a nut to begin with but I wasn't happy needing to relieve one side. Maybe not the captive side, might have beed the other side. Long time ago. Just check to make sure mounting holes have not elongated.