Boston Firefighters Credit Union has made plans to open in West Roxbury, down the road from a rival credit union that it fought in court earlier this year for the right to serve the city’s police officers. Boston Firefighters filed notice with the Massachusetts Division of Banks late last month to open an office at 2029 Centre St. in West Roxbury, a neighborhood known for its high percentage of cop and firefighter residents. The location is a former Eastern Bank branch that closed earlier this fall. President and CEO John “Bernie” Winne said the credit union has been actively looking for a space in or near West Roxbury for the past year and a half. The former Eastern branch is appealing because it is already built out as a financial institution and, at approximately 1,400 square feet, is a desirable size, he said. Should the Division of Banks allow the move, “we’ll be able to get in pretty quickly, without having to spend a whole lot of money,” Winne said. The location would b...