wow, ummm. I'm sure that there are several sites that would have the differences between the plants of yore and current plants. It shouldnt be too hard to find. Here are some links that i've come across:
aww, mannnn...there was one good site but the owner passed away so it's been changed around and now its a graphics company

sad.
anyway, here's a page with links to a whole bunch of stuff that i'm sure will andswer all your questions: