Re: P-51 w/ 4 X 20mm
I believe only the P-51 (post XP-51, pre P-51A) had the 20 mm Hispano guns. The first experimental P-51B was essentially a modified RAF MUstang II (modified with Merlin installation and modified cowling) and no version of the P-51 afterwards ever mounted 20mm.
The NAA version of the experimental P-51B lowered the wing seven inches to improve the cowl line and re-designed the lower radiator cowling plus changed the radiator core.
Last edited by drgondog; 22nd January 2010 at 14:41.
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