These are truly beautiful examples. I just realized why I hate(d) gloss finishes, its because if its not done like this why bother. Better off with something that doesn't show the imperfections of old refinished stuff or just the glopping on of shiny varnish.Those photos are impressive! What a massive project. And unless I missed something, I don't think it involved any major structural repairs to the hull. In my experience, that's what you can expect from a reasonably well built 50 year old fiberglass hull.
In contrast, the wooden boats of this vintage often have had-or now need-structural rebuilding.
But when all is said and done, the rebuild you posted is a major project both in time(massive)and $ investment. And the results as we see in these photos, are well worth it.