If Chinese can have their equivalent then why not us? If PDV goes the right then we can have our own SM-3 block-2A if we put more resources and funds for it.
I think it can be converted but what we need is to further evolve AAD and PDV into highly agile missiles like S-400 and SM-3 Block-2A
RIM-161 Standard Missile 3 - Wikipedia, the free encyclopedia
95% similarhardware but imroved software and addition of small fns near warhead section
Pragati tactical missile is Pragati ( Progress ) over Prahaar Missile : Offical | idrw.org