The development of the NA-97 A-36 saw the first significant change made to the design of the front scoop 

The XP-51B was initially fitted with a modified P-51A/A-36 front radiator scoop 

Close-up of the NA-102 P-51B-1-NA production front scoop 

A close-up of the P-51 Mustang I’s adjustable “alligator” front scoop 

A close-up of the P-51 Mustang I’s adjustable “alligator” front scoop 

Front-on view of the production P-51B/C/D/K front scoop 

The Hispano II 20mm cannon had a different ammunition feed 

The original P-51 duct/plenum design 

P-51 Mustang “Airframe on the half shell” 

P-51 Mustand Under Camouflage Net 

P-51 Front view of the left underwing dive brake 

Ladies with 20mm Cannons on a P-51 Mustang 

A-36 Invader (P-51 Mustang) on Ground, Dive Brakes Retracted 

P-51B Mustang Gun Sight 

P-51B Mustang Gun Wing 

A-36 Invader Engine Runup 

1940 Design North American Ad 

P-51B Mustang Gun Wing 

P-51A Mustang on Ground 

Final Painting of a A-36 Invader