67/68/69 cuda dilemma
mosleyme is correct. After going through some old pictures, it was a '68 FB I sold that had the SS springs and long(b body) front hangers. PO moved the axle back for tire clearance.
Pretty sure the springs on that '69 were stock units. Probably not the original ones for that car(since it was a tubbed drag car). I'm guessing someone pirated a good(8¾" or Dana) rear axle and replaced it with a 7¼" along with the springs.