seems to me the question should be how many quarts in the pan is right for the engine?
put the car on a chassis dyno with 7 quarts in the pan for a baseline, 7 should not be too many if the suspected target is 10. add 1 quart and run make a pull. repeat until you see evidence of oil level reducing power (windage) and you've found the TOO MANY number. pick a number of quarts that you consider the capacity of the pan to be and check the stick
what does the grab end of the dip look like, can it be shortened to raise the gauge to read full with the decided upon volume of oil in the pan?
maybe a set-screw collar or stack of heat shrink tubing to create a sleeve?
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