What years Ram 4x4 had the 46rh trans? How to id a 46rh? I'm thinking 94-5 only but seems maybe some 96s. As for x-case wouldn't those years be left side drop and my 75 is right side. So what case is best behind a 46 rh for reliable economy, not extreme rock crawling or offroading. Plan is to swap in a OD lock up converter trans and oart time case behind my 360 wedge (non-magnum) in my '75 Power Wagon.