Which raises the question - seeing as how those Asian mfrs were designing their molds years ago, when these boats were still new - if they had tried to visit a base to get a good look at (much less take pictures of) them dockside, wouldn't that have been looked-upon as...uh, well...spying?
Reminds me of once, 'way back in the early '80s, when a sailor I met on a bus to Point Loma, in San Diego - really, a total stranger - snuck me onto the sub pier there, to stand right next to a Sturgeon-class (I think - really didn't know enough about it at the time) boat. Looking back on it, now - the way he just up and invited me down there, practically as soon as we started chatting - I think maybe he was security, and down there at pierside someone(s) was taking as good a look at me as I was getting, of that sub. I do wish I had paced off the distance between the sail and the forward hatch, ballast vents, torpedo trunk and buoy cover, etc. - except back then I didn't even know what most of those were!
Anyway, there's no substitute for the kind of massive photo-archive that you've got for the Casimir Pulaski, Don.
And I think you're right about Google - and perhaps by now there are sufficient public photos of the later boats, to put together a similar collection. I'll certainly appreciate whatever you want to send me!