Well I do not know if anyone has trouble finding a upper head mount bracket for power steering in your monza....
I found that the GM type 2 pump (EMS-MS100-72M) seems to work very well with the head mounting bracket from (KRC 31410000)
Then just get the pulley you want 1 or 2 V grove...
It will take a few conversion fittings on the pump pressure line...But I found it the easiest way to get it all together if you have NOTHING and it save spacer from the bigger 1st design pump.
Just a thread maybe to help someone.
Jim