DeLorean was widely known at Pontiac for the Pontiac GTO ("Gran Turismo Omologato"), a muscle car named after the Ferrari 250 GTO. As a slightly bigger Chevrolet, the Pontiac brand reached third place in total annual industry sales in the United States. To highlight the performance emphasis of the brand, the GTO debuted as a Tempest/LeMans option package with a larger and more powerful engine in 1964. This marked the beginning of Pontiac's renaissance as GM's performance division instead of its previous position with no clear brand identity.