I don't think you need power steering on an Ebody
Removed mine, an saved a lot of weight, and power loss.
Plus makes putting in headers easier.
On my 496 72 Cuda, I used 2 inch Hooker Super Comps.
They were fairly easy to put in from under car, with just the front of car jacked up about a foot.
One of the pipes is a slip fit, so you get around the torsion bar/steering rod.
Had to do a slight dent in two spots.