BUT, what you can do ( and I did this once on an old chevy and it does work)
if you have hard lines that will thread into the ports on the gear box, loop a length of hose between them, pouring a bit of fluid in the hose and turning the wheel at the same time, until it comes out the other end, then connect the hose.
sort of a "self" enegizing set up, but it'll keep thing lubed and will at least help lessen the effort to steer.
( I did this on a '78 Chevy Malibu, had NON power steering gear and the sector shaft broke, could only find a power steering box and this is what I did, worked fine)