DANA 20 Transfer Case Adapter for 6r80/10r80 Advanced Adapters

Atlas/Advanced Adapters Dana 20 Transfer Case Adapter for use with 6r80/10r80 Transmissions. 

The go to adapter for the 1966-77 Classic Bronco. 

Instructions found here - 

file:///C:/Users/cpsta/Downloads/50-3901.pdf