New fold down seat question, why...

Harking back to the original 1964 Valiant Barracuda, the engineers reconfigured the body bracing to allow passage between the passenger compartment and the trunk.

The rear seatback folded flat forward, while a security panel immediately behind folded backward, creating an opening 64 inches wide and 13.5 inches tall. The happy result was a fully-carpeted cargo area 6.5 feet long (long enough for skis and surfboards), offering 56 cubic feet of cargo space.

And if you opted for a sunroof (metal this year, as opposed to the folding vinyl sunroofs available in 1971-1972), you could also haul taller objects through the hole in the roof.

Plymouth Dusters could always swallow loads of stuff. With the Space Duster option, the car's cargo capacity was truly enormous.