46re transmission help

Some info i experienced on 46re trans, i picked up an '03 Durango with a 5.9/46re that had no reverse., no o/d either. Pulled pan and low/ reverse plunger was torn up. Also found a sizable piece of a snap ring in pan. turns out it's the snap ring that secures the o/d assembly in its case. These snap rings have a tendency to break with high mileage on them. Stopped at this point and ordered a complete overhaul kit with a new snap ring included in the kit. now I just need time to rebuild it. Something else to check for when looking at these 46re's for a project.