HELP with P/S pump ID!!!

I would keep it all as a set , it came off a small block and will go back on a small block , but hey do what you want , the Saginaw pump has different mounting points on the pump itself , mainly the lower stud I mentioned before , the dogleg is for the newer water pump but your federal brackets won't have the mount for the lower stud which is why I would just keep it all together , who knows you may need a new water pump one day and the 70 up aluminum ones are better than the older cast pumps so now you have what you need to make the swap , break up the set and you have nothing .