Complex sentence: Willys-Overland's Brazilian operation included manufacturing the Renault Dauphine and Gordini and, when it was bought by Ford do Brasil in 1967, plans were already underway to replace it with the Renault 12, and Ford inherited the project.
Split into simpler sentences: Willys-Overland's Brazilian operations included manufacturing the Renault Dauphine and Gordini, and plans were underway to replace this range with the Renault 12. When Willys do Brasil was bought by Ford do Brasil in 1967, Ford inherited the project.