I was just curious if an Eastern Catholic Hierarch was still open to election to Pope. If this is possible what would be the ramifications for the church? would the rite the Vatican use be eastern? or would the hierarch have to change the rite he celebrates?
Yes, any man who is eligible for ordination may be elected Pope. Today, it is highly unlikely that someone who is not a member of the College of Cardinals will be elected Pope. But, there are Eastern Catholic Cardinals (i.e., Cardinal Sfeir, Patriarch of the Maronites).
In fact, in the conclave that elected Blessed John XIII, Gregory Peter IV Cardinal Aghagianian - Catholicos of Cilicia was very close to being elected Pope.