Bluenoser - do you have a copy of the Missing Air Crew Report for your Uncle?
It is No. 12319 and is available online through the website
www.fold3.com. The MACR has the serial numbers for your Uncle's aircraft (44-14710), it's engine, as well as the six .50 caliber machine guns on board. These should be useful in identifying any wreckage that may be discovered.
It also has the coordinates of his last known position (5052 N -- 0622 E) and heading (180 degrees).
Hope this helps.
Best regards,
Paul Dame