Here's a tip from the Milodon site who made my oilpan....
"TO ACHIEVE THE PROPER DIPSTICK READING: Fill the Empty Pan with the Number of Quarts Listed in this Catalog. Listed Capacities Are For the
Oil Pan ONLY and DO NOT Include the Filter. Before Starting the Engine, Check the Dipstick and Scribe the New Full Level Where the
Oil Mark Is. The Original Full Mark Has No Bearing on Where Your New Milodon Pan Full Level Will Be. "
Ordered the Lokar dipstick and am waitng for that to show up now.
Tim