M_Boats: non Montgomery gooseneck search

Hello all. I had a bit of a wreck recently with an old sailing dingy that didn't hold up too well in a good blow (obviously not as well built as a Montgomery). I'm having trouble locating a sliding gooseneck that will attach to a wooden boom with a rectangular cross section. The boom is 1-5/8" wide X 1-7/8" tall. The old gooseneck was bronze and it would be nice to find another like it but I'm having trouble locating anything that would work. Any suggestions on where to look? Thanks Mark Dvorscak M17 #400 Grace And a 1960 vintage sailing dingy of unknown origin