The F-4T was a late 1970s proposal by McDonnell for a stripped F-4E optimized for the air superiority role. All air-to-ground capability was to be eliminated, the armament consisting solely of the built-in M61A1 cannon, the four belly-mounted AIM-7 Sparrow missiles, and the four wing-mounted AIM-9 Sidewinder missiles. A digital computer was to have handled the weapons system.
By the late 1970s, the Phantom was clearly old technology, and no customers ever expressed any interest in the F-4T. The project was abandoned before anything could be built.