WOW, you have a fluorescent lighting musuem in the making!!!
The good news is they all look pretty damn authentic! The 201 and 202 photos show WW II fluorescent light fixtures!!! Like the ones COD lost to some sumbitch who wanted them for his workshop!!
The only thing is they had white diffusers instead of the clear plastic used in yours... my guess is that over years the plastic got funky, cracked, turned yellow, and was replaced with clear plastic. You can use white plastic sheet and make them "orginal" again. The other fixtures look like the kind I think I saw in TROUT last year. I willl look at my photos to see if I caught any... maybe the Torsk guys remember better... they spent much more time aboard than I did.
So you don't have to rip anything out!
PF