Originally Posted by
UAL T38 Phlyer
Later, that bolt-on capability was wired in to F-16s (I think just Block 40s; not sure about 50s).
Not sure if you are talking about back then, but now, with the CCIP program, all Viper blocks that have the upgrade are just about identical from a capes and avionics standpoint, they all basically behave as a Block 50 to the customer if I am not mistaken.