just a little history,I am new to sailing(8 days).We had a hell of storm on the lake on the 6th. and the two starboard stays broke.The mast went to the port side and broke the (foot??) on the bottom of the mast.This casting has 2 pully's on it,dont know the term for the part.This is the part of the mast that holds it to the bracket on the cabin top.Is this part available new or used and if so can where? The boat is a 1974 20' oday. thanks Pete