Primary vehicle down need help with Dakota

4.7 tranny I know is a beast of its own form. So I'm gonna say yes, it has to be from a 4.7 as for the lift. You need to make sure all your shaft angles are correct before you proceed. You may have the drive shaft at too steep an angle and that's why they keep breaking. It's my understanding that any more than a 2" lift requires a transfer case drop. I would also double check the pinion angle