If this would have been built for the U.S. market it would have had the same problem as the A body wagon......its too small.
To compete with the rachero or El Camino, i would have had to have been a B body. A Belvepickup.
The valiant is a cool car but it is a compact car of its times. In the late 60s, sales were way higher on the bigger cars
Either way, i would drive a valiant pickup....maybe with a topper