LS power steering pump question

[LostMy65]

Originally Posted by ls1nova71

The threaded one on the back is the pressure line. Sounds like you have a hydroboost pump. You need to cap off the upper return fitting if not running hydroboost.

I found this thread doing a forum search.
I bought a complete power steering and hydroboost system off a 77. I'm doing the Power Steering upgrade first, then Hydroboost later. So your post answers my question I was searching for.
I'll just plug the top one off until I install the hydroboost.
Thanks