Many upgrades since to it electronics, avionics and re-wing.
Correct, but the line and tooling had been mothballed after that and maintained at small government expense, so the plane could be put back in production in case of a war, as it was relatively simple to make and it was expected to take heavy casualties in an all out war with the Soviets. The Congress had it destroyed as part of the so-called ‘peace dividend’ and after 1993 there was not even a possibility of new ones.