But it also appears it wasn’t standard, how interesting!
Definitely not standard, but probably an “as available” type of deal. If a forward windshield needed replaced and a one-piece was available it was an option.
The same is the case for the “amber” windscreen on F-15Cs.
If I recall, the Missouri ANG happened to be right next to one of McD’s facilities, and thus were able to modify some of their Phantoms in this way. Those Phantoms were then exported (F-4Es) or retired (F-4Gs) in 1996.
Upon further research i found out that the F-4E AUP that I showed with the modified windshield came from the Indiana ANG! Perhaps a few F-4Es outside of the Missouri ANG were able to get tve modification as well :D
That or there were personnel from the Indiana ANG that also worked for McD (turns out that was what happened with the Missouri ANG Phantoms).