You do not mention the reason for the replacement; if the centerboard broke in an accidental grounding or some form of unintended incorrect operation then it could be a covered incident under your insurance coverage. Sorry I cannot help you with your questions but thought I would mention the insurance possibility. Should it be a covered incident it will be the insurer's responsibility to a select a boat yard and look for the parts. Hunter Marine may be able to provide information on where to find a replacemnt. Good luck.