Pump it down TRW pump?

For the best advice I would call Bergman Auto Craft. He’s very knowledgeable and easy to talk to.

On my ‘67 Barracuda I called Turn One Steering and they suggested a flow restriction valve, such this for my Saginaw pump. Not sure if it is what I bought though.
Turn One Steering - Steering Products

The OP may want to call both.