Once you know what fitting that you have on each end, go the the NAPA websight and review their hose selections.
On my Challenger, I have a rebuilt box and rebuilt pump that were not 1970 like the car. I ended up having to figure if the box end of the hose had a male or female fitting, then I had to figure out if the pump end of the hose had a straight or a flare fitting. Then I used the NAPA websight to select the appropriate hose that would match my rebuilt parts. I did have to search different years until I found a hose with the correct combination of fittings.
I ended up with a 74 hose assembly for my 70 car.