The Alfa Romeo Giulia Tubolare Zagato, or TZ, was developed as an all-out race model for 1964 International GT racing and was incredibly successful, with class (1600) wins at Monza, Sebring (driven by Chuck Stoddard, it finished 13th overall in the midst of a pack of Shelby Cobras and Ferraris), Targa Florio, Nurburgring 1000km and the 24 Hours of Le Mans.

The TZ was constructed in limited numbers (about 110) at Alfa's racing subsidiary, Autodelta. It's lightweight, Kamm-tailed aluminum alloy coachwork was designed and hand-built by Carrozzeria Zagato, and combined with a state-of-the-art multi-tubular (Tubolare) space frame and the complete vehicle weighs only 1,500 pounds. The engine is a 1570cc twin-cam, twin plug, four-cylinder, producing about 160 horsepower. It features a 5-speed gearbox by Colotti. The race engine was built by super-tuner Facetti.