You can use the Galaxie dipstick or any that will fit your tube but it has to be calibrated (adjusted to length). Start with the pan empty and add as many quarts as your minimum and calibrate the dipstick to read min, fill to capacity and calibrate to read full. Be sure to check for your other components after running as remote filter,
oil cooler, accumulators and lines all add up to a big volume. Do a search and see what capacities guys have with the same components as yours.