The YA-7F "A-7 Plus" (originally A-7 Strikefighter) was developed in response to an Air Force request for an improved fast close air support and ground attack aircraft. Two A-7D's were sent back to the contractor for extensive modifications. The new design called for a new engine, either the Pratt & Whitney F100 or General Electric F110. Initially the F100 was installed. To accommodate the new engine, the fuselage was lengthened about 4 feet. New fuselage sections were inserted in both the forward and aft fuselage - a 30 inch section in front of the wing and and 18 inch section behind the wing. The wing was strengthened and fitted was new augmented flaps, leading edge extensions and automatic maneuvering flaps. The vertical stabilizer height was increased about 10 inches.

The project was cancled in 1989 in favor of the F-16.