issue 32 spring 2011 of epoxyworks magazine has an article about building impossible to find parts for your boat, another thing they show is how to make your own custom size and shape sink. seems like TD's are just as individual as small boats especially if you add the home built ingredient.
http://www.epoxyworks.com/
another idea would be plexiglass formed over a mold in the oven, homebuilders of airplanes and model airplane builders use this, if you have a well regulated oven it isn't hard.
anybody done something like this?[/i]