Includes upgraded 7 clutch direct drum, wide Carbon overdrive band, large A type overdrive servo assembly, hardened inner input shaft, 4 clutch intermediate clutch, reinforced sun gear assembly and custom valve body reprogramming. Requires non lock up style torque converter with 31 spline turbine hub. Choose from 2 different shift patterns. Stock shift pattern PRN OD/D/1, or hold manual 1st and 2nd PRN OD/2/1. Overdrive lockout position will hold 2nd gear. This unit is similar to our Street/Strip AOD except is equipped with the wide ratio gearing for increased acceleration. Great for heavy vehicles.