aftermarket steel gas tanks

Sorry to start another gas tank thread but I wondered whether anyone had come across a steel tank to replace my 1970 fiberglass version. I specifically need one that has the studs on the back for the rubber band mount. I have not seen one of those offered?? Anybody seen one of those in a catalog?

with the change to steel tanks the rear bobbins and rubber band was changed to an under tank metal strap retaining assembly.