Originally posted by Pongo:
No there was such a thing. One of the P51B prototypes had a 4 hispano wing. I have a picture of it.
That is entirely possible.
All P-51s with four Hispanos came from a batch of 150 ordered by the RAF. Carrying the North American Aviation NA-91 designation, 53 were retained by the USAAF, where they were designated as the P-51 (no letter suffix). When the AAF finally placed their own order, the aircraft reverted to the four .50 caliber Brownings. These were designated as the P-51A (NA-99).
My regards,
Widewing