Folks,
You may wish to speak with the manufacturers of your
oil pans.
The first goal in a performance unit is to get the
oil away from the crank.
The next goal is to keep the
oil at the pickup in all dynamic conditions.
One way that the above can be done is by designing the capacity into the lower part of the pan and add trapdoors, etc..
In other words. make it wide to hold 8 quarts, but deeper to keep the oil away from the crank and put in a bunch of sheet metal bits and a bespoke pickup tube.
In view of the above, a stock dipstick measurement could give you too much oil in the pan.
One thing for sure. You never wish the oil level above the windage tray.
Talk to the designers of your oil pan. They are the only folks who know what is correct.