We make it easy to convert your old Powerglide or Turbo 350/400 to a more modern, fuel-efficient 4 Speed Overdrive unit. The purpose of this kit is to allow the use of your factory installed shifter when installing a TH700-R4, TH200-4R, or 4L60 transmission. It includes a new laser cut and hardened detent, indicator plate, all hardware, and all brackets to allow the use of your factory cable. You can barely tell it isn't factory!