Blueprint 408 cooling system questions.

BTW, I went out and looked at my Milodon water pump. I thought it was a 6 blade pump, but it has 8. I need to find my notes from all my discussions with Milodon, Evans, Stewart Components and a couple of other places that I took while sorting out my cooling system.

Just an FYI, as I think I posted my pump only had 6 blades. My memory sucks, which is why I take notes.