The 1LE package is offered on 1SS and 2SS coupe models with an exclusive Tremec TR6060-MM6 six-speed manual transmission. Paired with a numerically higher 3.91 final-drive ratio, the close-ratio gearing of the transmission is tuned for road-racing performance. As with the ZL1, the 1LE transmission features a standard air-to-liquid cooling system for track use. Read about this car.