Sleepythecivic

could i use a 2 barrel on my cvcc motor without having to swap the head and manifold? if i can, then would this preform better than the 3 barrel when it comes to devacing? i heard the carbs tend to run richer than normal after a devac and everyones been devac 3 barrels so i was wondering about the 2 barrel. ive got a spare 2 barrel sittin around and id like to do something with it