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Vultee V-12 / AB-2
 V-12
A later development of the Vultee V-11 was the V-12, a streamlined alternative to the largely unsuccessful type. First flown on 13 September 1938, the prototype aircraft (NX18985) was sold to Pratt and Whitney aircraft as a test beduntil scrapped in 1950.
The 1939 export designation for the AB-2 (Model V-12) first flew (as V-12C) in February 1940. The single prototype was registered NX28367.
 Vultee V-12D
An order from China for 26 V-12C (with 1100hp Wright R-1820) and 52 V-12D (with 1600hp Wright R-2600) resulted in shipment of one each, the rest were delivered in parts for assembly overseas.
 Vultee AB-2
V-12
Engine: 1050hp Wright GR-1820
Wingspan: 50'0"
Length: 38'2"
Useful load: 3470 lb
Max speed: 254 mph
Cruise speed: 226 mph
Stall: 70 mph
Seats: 2
V-12C
Engine: 1050hp Wright GR-1820
Wingspan: 50'0"
Length: 38'2"
Useful load: 3470 lb
Max speed: 254 mph
Cruise speed: 226 mph
Stall: 70 mph
Seats: 2
V-12D
Engine: 1050hp Wright GR-1820
Wingspan: 50'0"
Length: 38'2"
Useful load: 3470 lb
Max speed: 254 mph
Cruise speed: 226 mph
Stall: 70 mph
Seats: 2
AB-2 / V-12
Engine: 1200hp P&W R-1830-S1C3 Twin Wasp
Wingspan: 50'0"
Length: 38'2"
Useful load: 3688 lb
Max speed: 262 mph
Cruise speed: 237 mph
Stall: 72 mph
Range: 1130 mi
Seats: 2
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