Six cylinder torsion bars with big block

I've been swapping 6 cyl. bars INTO all sorts of Mopars since the 70's, and would never consider any other way. Here's why. The 6 cylinder bar has to be twisted tighter to maintain the weight of a Big Block or Hemi at normal ride height. When you hit the gas, that extra stored energy in the bar will spring the front end higher the instant torque is applied to the rear axle.
Actually there is no extra energy stored vs a thicker bar; stored energy is the same for both. The large upward motion from the /6 bar is caused by it having to untwist more to release the same amount of energy. The lighter bar also works better with a low rebound rate shock.