@j-healy - you asked a question over at HyperFail about the bombload of the Vengeance. The answer is, any airplane could carry any bomb that could be carried by its shackles. I have several photos of FAA Tarpon/Avengers being bombed-up with British bombs with the Far Eastern Fleet and US Bombs with the British Pacific Fleet. It depended on where they were and what the sources were. As regards Vengeance bombers in Burma, according to the photos in Peter Smith's book "The Vultee Vengeance in Battle" which deals with Burma there is a photo of bombs dropped by a Vengeance, and they are British bombs. In the photo it's 2 500lb bombs and 2 250lb bombs. My guess would be the bigger ones fell out of the bomb bay and the smaller ones off the wings.
This also fits with photos of other bomb-dropping types in British service in that theater carrying British ordnance.
HTH