I just got an email from Stoddard that they have worked with Dansk to reproduce the 73.5 Fuel Tank. As the email refers to it, the Unicorn.
It was in my opinion the best of both worlds. Internal baffling and swirl pot to prevent fuel starvation during cornering, and designed to hold a full size spare unlike later ones.
https://www.stoddard.com/91120190402-fuel-tank.html