Reply to "Overflow tank"

I can't find any original photos that show that 7" relationship. They all appear to be even at the top of the tanks.
I'm not doubting you, just can't find anything that agrees with that.
My car, as I recall, did have a small tube welded to one of the pipes near the engine and it had been capped off with a hose and clamp.

The water temp sender was not in the swirl tank. That port in the tank was plugged. The sender was in the engine block.

I added the hose from the radiator to the swirl tank.
I may need to build a new tank out of brass sheet metal and solder it together to get it to fit where I want it to go.
One of the reasons I am at loss to answer some of these questions is because where the overflow tank is located.
It needs to come out from under the screen so I can monitor it properly.
My 180 headers are what caused the relocation of the tanks further back under the screen.
One of the discussions I had with Gary Hall about this was "you don't need the overflow tank". That was his comment.
I didn't know anything at that point so I didn't even question the comment.