Ok, need some help identifying and finding a gasket. My '69 has a spacer between the water pump and the block. The gaskets that come with a new pump go between the pump and that spacer. So anyone know what the gasket between the spacer and the block is called? It isn't the same shape/have the same number of holes as the other two gaskets, and I can't seem to find the right one anywhere online. Thanks in advance!