Thank you very muich for helping me
For the cam shaft, my picture shows :
1 support
2 cams with different angle
1 support
2 cams with different angle
In the picture of the ALLison and also the merlin, i have also some picture not so beautifull and they show :
2 supports on each side of the 2 cams
The is why I m not sure it's such a motor
I was looking a picture of the Merlin 45 which équiped SPit mark V
For the circle with the reference, did see the same circle on other planes or currently its the North american fashion ?
IT could be an A-36 , because the 27th FS was équiped with
It's sure it's not a B25 , because it was a single engine fighter plane
I don't really beleave it's a P51, the brend new with a modern look, some people could remember