If you own an older muscle car with a modern electronic transmission and want paddle shifters and a manual mode, Twist Machine has a setup that works with GM 4L60E and 4L80E trannies and the Ford A0DE. The Shrifter fits quite a few model years of GM, Ford and Chrysler vehicles and a few Nissans. It only provides forward gears, leaving reverse and park on the stock shifter for safety reasons. Twist’s proprietary electronics work with most of the popular transmission controllers. Pulling on one of the paddles sends a signal to the computer, which in turn determines if and how hard to shift.