For the fastback Barracudas to achieve what the Valiant cars can (wheel/tire) you would have to mini-tub the rear and lose the cool folding seat. The wheel opening don’t lend themselves to being pushed and rolled as well as the Valiant’s. They seem smaller in the already tight areas of the Valiant’s.
Now, I say Valiant in reference to Demons and Dart Sports because they are basically Valiant just like the Duster. However, the Dusters, Demons, and Sports have those big back hips! I like big butts and I can’t lie.