FIRST FEDERAL <FFBN> MERGING INTO BANKEAST <BENH> First Federal Bank FSB said it has entered into a letter of intent to merge into BankEast Corp for 60 dlrs per First Federal share in BankEast common stock. First Federal said, subject to certain adjustments, including First Federal's earnings prior to the close of the deal, each share of its common stock shall not be converted into less than 2.9 shares or more than 3.5 shares of BankEast common. First Federal said the proposed move is also subject to execution of a definitive agreement, regulatory approval and the approval of First Federal shareholders.