Need Parts and advise to change manuel steering to Power on Dart GTS 69

The power steering box is longer than the manual box so you need a new column unless you are willing to cut your down and use an aftermarket coupling. You will need the crank pulley, mounting brackets and PS pump for the change.

I did this a couple of years ago and had a doner P/S car to pull all the parts off. I would recomend this approach over sourcing parts from differnt places.

BTW, swapping to power has to be one of the most satisfying upgrade I have made to my Barracuda. It turned it from a slow responding parking lot handful to a very quick and nimble handling car.