This Atlas input is designed to be used with our adapter 50-2704E. The 50-2704E is a kit to adapter the AODE transmission to a stock Bronco Dana 20. We have had numerous customers that have decided to upgrade to an Atlas. The length on the new AODE shaft had always been an issue when connecting to the Atlas until now. This longer input allows you to remove the Dana 20 and bolt the Atlas directly to the adapter.