Moms old Imperial is also a 440 with sure-grip, it a shame, I know it has not even been started in 20 years, sitting in the garage with 4 new blue walls, because the tire shop never cleaned the blue off the new white wall tires.
Mom passed away suddenly and my dad, and us kids never wanted to move moms car. I bet it still has a full tank of varnish sitting in it.
At least it is in a heated/AC garage so it is protected somewhat.