I have a 95 f350 powerstroke 2x4 that I want to swap to a 4x4. Is it possible that i can bolt and axle right up to the frame without having to buy another frame? Other trucks I've seen have that same bracket that houses the shock and spring on both the 4 and 2 wheel drive, that's why I am asking.

 

The search function will yield dozens of threads doing just that.