Super49Dyna

I recently got a 1949 Buicker Super 8 4D with Dynaflow. The car had been in a barn for 30 years and the fuel tank was totally filled with sludge. I dropped the tank and pitched it before taking any measurements. Now looking to get a new one there appears to be four options on tanks with the filler spout location. Did they really have the filler tube in differing spots for the same year? What is my best course of action at this point?