Does anyone know if both the early and late style Saginaw power steering pumps use the same mounting brackets on small block applications? I have one of each style pump, both of which have the two large brackets that mount directly on the pump. The late style pump I have also has the third small triangular bracket that has the offset in it. The early style pump is missing that bracket. I am trying to determine if the small triangular bracket on the late pump would be the same bracket (shape and size) as what should be on the early pump.

one bracket system for cast iron water pumps. Another system of brackets for aluminum water pumps.

Here are the two pumps in question. The two large brackets that bolt to the pump bodies are very similar but not exactly the same. I'm trying to determine if the small triangular bracket on the pump on the right would be the same for the pump on the left or not as I have to get one.