I am new to the forum and want to be a help to anyone trying to complete this task of a fourth gen 4x4 conversion. I was told it could not be completed with all factory components but defied all odds. My truck started life as an 2015 Ram 3500 2x4 solid I-beam axle. It is now a 4x4 with all factory components drivetrain and suspension. Only thing that is not factory is the electronics to control system but I can help with that also. I have built my own microprocessor to control the system and it works just as factory. Transfer case used in build is a manual transfer case with electronic controlled clutch.