Ok so when I rebuilt my 350 I got a new oil pan. I wasn’t a high volume pan as far as I know. But it’s not the same as the one that was on before I rebuilt it, shaped differently. When filled with the “proper” about of oil it barely touches the bottom of the dipstick. So my thinking is, the length of the dipstick didn’t change meaning the oil still needs to be to the full line on the dipstick to make sure the front of the pan has oil too. So more oil right? Seems stupid I know. but since nothing changed besides the pan, I can’t overfill it by filling it up to the full line right?