Lockheed-Martin offers F-21 to India, but it is former F-16V Viper with F-22 like name.
The F-21 is fitted with a Ground Collision Avoidance System (GCAS), a retractable flight refuelling boom, a “Sniper” targeting pod, and an Active Electronically Scanned Array (AESA) AN/APG-83 radar provided by Northrop-Grumman, derived from the two radars that already equip the F-22 and the F-35.
