@drhino I can see where you’re coming from, but I do stand by that statement. I own a 69 Grand Prix and I can’t tell you how many times it has been mistaken for a much later car. So that statement is born out of personal experience. It surprised me for a while, but I just expect to be approached these days and be asked “wow! Is that a 75, 76, etc?” Can’t fault anyone either, they have a similar basic shape and to someone who doesn’t know any better, that’s enough.
I would say that the Grand Prix looks much more similar across those generations. Those big ugly fender scallops on the second gen Monte makes it impossible (to anyone other than Ray Charles) to mistake them.