They should have sheared the roof off a standard coupe and spared the convertible.

!n 1967 a California-based company was advertising a fiberglass hardtop roof called the Hobo that turned a Mustang convertible into a quasi-wagon. Installing the $595 accessory roof required removing the trunk lid and convertible top.
There was also a "proper" conversion designed by Robert Cumberford, an independent designer who had worked for GM in the 1950s, he had an idea for a Mustang wagon with Barney Clark, an executive at Ford’s ad agency and Jim Licata, a car enthusiast and built by Construzione Automobili Intermeccanica in Italy in 1965 .

can anyone tell me more about this car?