Many racers would argue that the GM two and three speed transmissions are the most consistent transmission designs, and when paired with the proper rear gear, the quickest! ATI's GM Transmission Adapter Kits allow you to benefit from the Powerglide and Turbo-Hydramatic designs as well. Each adapter kit includes an ATI Adapter Plate, ATI Crank Adapter, ATI Flexplate, and all of the necessary mounting hardware for your Ford, Chrysler, Nissan, or Toyota engines!