Please see the most recent updates in the "Where did the .com name go?" thread. Posts number 16 and 17.
Now to wait for payday to get it. Believe me after a plane has been in action and it's instuments have been through the Instuments shop, you might find a gage that came out of a PBY or from a N3-N.
The only time you'll find matching instuments is when it comes off Grumman's assembly line.
But even after the plane goes through Navy's A&R depot the instuments are a mish-mash. Just as long as they work.