Looking for a fuel gauge

I’m just one instrument away from completion of the panel in Hudson NZ2035 and its proving a toughie.

When they first came out the Hudson had gauges of one type and then they changed to another which is the far more common (it might be the switch from the RAF to USAAF contracts that did it methinks).

However I am trying to track down a Liquidometer EA-31-337-1FF for the front fuel tanks. It is similar to the rear one shown in the attachment but of course is marked as being FRONT and is differently calibrated.

Any leads much appreciated.