Any Ford transfer case will bolt to any Ford 4x4 transmission, automatic or manual. That is from the 70's all the way up to the Super duties. I am not sure about the later super duty transfer cases, but I do know the 6 speed stuff is different. You can get one of those cast iron 205 monsters and it will bolt up also. The only thing that is different are the shifters and linkages. It's best to get all that with the transfer case so you will know it is compatible. And you also need to decide if you want the driveshaft to slip in and out of the transfer case output, or if you want a fixed yoke and have the rear slip joint made outside in the driveshaft itself.