Plymouth’s 1971 Duster 340 wore a compact-car body and a shark-tooth grille, but its 340-cubic-inch small-block gave it enough power-to-weight advantage to hunt down muscle cars costing twice as much. Motor & Mutt TV makes the case for this overlooked Mopar as one of the smartest performance buys of its era. Watch to see why enthusiasts still argue over exactly what’s under the hood.