Changing from Nusach Sfard to Nusach Ashkenaz

Hi,

One whose ancestral family davened with the "nusach sfard" edition of chassidim for generations, but whose parents raised him to daven with the "nusach ashkenaz" edition because of the local community, may continue to daven with nusach ashkenaz. The original edition of these chassidim was nusach ashkenaz.

(Rav Moshe Feinstein, Igrot Moshe Orach Chaim 2:24)

המצפה לישועה,
Mordechai