Sohal is known to be an aggressive tang regardless of what it's tanked with, however it's not a guaranteed bloodbath by any means
Fish of the Zebrasoma species can be aggressive as well, more so towards their own species, at least in "small" tanks which goes to Levi's question, how big of a tank are you talking?
Personally if it was me, and as expensive as black tangs are, I wouldn't risk it at all.