I have a 1971 F100 Custom 4x4 with an open knuckle Dana 44 front end, and I have read about converting it to power steering, as well as power disk brakes. How would I go about this? What years can I easily interchange the parts? I know the gear box has to be torn apart and something switched so the box can mount in the stock possition, what is that? Thanx in advance for the help.