Autodelta, Alfa Romeo’s racing arm, produced the Giulia Sprint GTA by taking the standard Sprint GT coupe and replacing most of its steel body panels with aluminum. The result — GTA stands for Gran Turismo Alleggerita, lightened — weighed approximately 745 kilograms, which is roughly half the weight of a modern compact car and 200 kilograms less than the standard Sprint GT it was derived from. Into this lightweight package went a 1,570cc twin-cam four-cylinder that produced 115 horsepower in road tune and upward of 170 in full race preparation, driving through a five-speed gearbox to a limited-slip differential.