It is your choice - both are available.
The original E-Z-Eye tinted option was, I think, a tint for the entire piece of glass (on any window, I think).
I have seen reproduction windshields that are tinted all over, with a darker shaded band at the top.
I have 1954 trucks with and without the E-Z-Eye glass. I have no opinion, based on experience, on saying that the difference is significant (but, it must have been, I guess).
