That water pump is obsolete. I just had mine go out on the Conversion and I had to get it rebuilt at Hite Parts in Columbus Ohio. Can't even source a gasket either. If you Find one of these water pump grab it and have it rebuilt.
I painted my block I believe the similar color you did the Tamraz’sOldsmobile metallic blue but I noticed they have no more in stock. Do you know where I can get that similar color or did you use a different brand?