Canti and V bosses are the same in terms of spec (i.e. design distance from rim, typical spacing etc.).
In terms of hanger some are designed to be mounted on the forks, some on the headset, chance is you can find one that works since many cyclocross bikes have one (search cantilever hanger on
ebay). However cantis and normal Vs don't have the same cable pull requirement, so generally require different brake levers, in case you are unaware.
In terms of suggestion, high end forks with rim brake bosses are increasingly rare as discs dominate, however you can still get fairly decent ones, from perhaps
Manitou R7 down, in terms of quality and price.