rebdoniel – the syrian community is by far the largest sephardic community in brooklyn, but there ARE other sephardic communities in brooklyn as well as in other parts of the region. The above posters are correct, once you leave Brooklyn you will have even more of a variety of communities to choose from.
Zahavasdad – the Syrian community has a long standing mesorah (many, many generations) to not accept gairim into their community. That’s their minhag already.