Great overview, cdragon.
Two of the boats are listed on yachtworld;
YW# 3144-1775070 Located In Portsmouth, RI. 1977,sloop rigged, diesel repower in '06 w/49hp Phasor. older 1988 Hood mast. rigging is that old, too.
YW# 1704-2015978 in Long Beach, Ca. a 1979 ketch
The other one(the first to catch my eye) is a 1978 41' by the name of Spice Lady offered on the Cheoy Lee assn. website. This one has had the Teak decks replaced. Pics of the project in progress appear as though it was well-done. not sure about chainplates and deck hardware replacement.
Still thinking and looking.