WWPR HD2 has always had Spanish A/C programming, not urban. The Clear Channel Mia format they rebroadcast sounds similar to WPAT FM.
I think it is impossible to find a frequency for a translator in Manhattan that would not interfere with a local or suburban station. And the weak translator signal could also be tough to receive if there are nearby pirate stations on the frequency.
Translators may work in less densely populated places, but they may be impractical in New York.