Here are the typical GM / Saginaw O-ring style power steering fittings:
Some of the Ford fittings are very different:
Most of the Ford designs are completely incompatible with the Saginaw fittings. In thinking about it, it is possible someone used a Ford nut or line in your GM pump. Regardless, I think that you will be able to simplify the installation by using Saginaw O-ring fittings with that pump.