Introduced in October 1993, the 456 was designed by Pietro Camardella at Pininfarina. The designer took heavy inspiration from the 365 GTB Daytona when designing the car.[5] It was available in GT and (from 1996) GTA trims. The former has a six-speed manual, and the latter has a four-speed automatic developed in partnership with FF Developments, in Livonia, Michigan (which was later purchased by Ricardo Engineering in Great Britain). The automatic transmission used in the 456 was the second and last conventional hydraulic automatic transmission with a torque converter to be offered by Ferrari (The transmission found its first use in the 400/412 series). The 5,473.91 cc (5.5 L)[4] 65° V12 engine was derived from the Dino V6 rather than the more conventional 60° V12s used in the 412 and Daytona. It is rated at 325 kW; 436 hp (442 PS), with 4 valves per cylinderand Bosch Motronic M2.7 engine management. Ferrari claims it could push the 1,690 kg (3,726 lb) car to a top speed of 309 km/h (192 mph), making it, at the time, the world's second fastest production four-seater automobile behind the Porsche 959.[6] Acceleration from 0-97 km/h (60 mph) takes 4.8 seconds, with a 13.3 second quarter-mile time (400 m).[7] At the time of its development, the 456 was the most powerful regular production road car ever developed by Ferrari. In 1996, the engine management system was changed to a Motronic M5.2 management and the engine with the updated system was given the F116C code. The V12 in the 456 is considered by some to be one of Ferrari’s more reliable engines, not having many of the major issues and servicing requirements of other Ferrari models.