IF it was mine, I would try and find an original take-off BENDIX linkage PS system that came on the car. You could use an EATON style pump on the engine as they were used in the early sixties so brackets and pullys are available somewhere.
A guy showed me his '57 FORD one day and popped the hood. I looked and the engine (Y-BLOCK) seemed correct but something just wasn't quite correct.
It dawned on me and I looked back on him and he was smiling.
It was a 351W swap that he had detailed to appear as a 312. He bragged about how many old time enthusiasts had not caught the swap at car shows. I need to get a photo to share.