A 440 A-Body... that can handle?

I believe those videos were before the addition of bigger sway bars and certainly before the addition of bigger torsion bars. Rear spring rate also needs to be addressed (those are a pair of home built stacks and work fairly well for what they are). Many things were yet to be addressed, but the point is that the car handled better than most a-bodies that are street driven and that's with a big block hanging out over the nose.