1969 Barracuda 383 convert to power steering?

I have a 1969 Barracuda 383 Fastback 4 speed non power steering car.
I would like to make it power steering. Is it possible that they came from the factory set up this way? Does anyone have a Factory 1969 Barracuda 383 factory power steering car?
I have heard its very difficult to put power steering in these cars because of the exhaust manifolds. Can anyone shed some light on this situation for me before i waste a lot of money and time. Thanks in advance, Lou