62 Lancer G3

Sorry, I don't have any answers other than what can be seen in the picture. I thought the window placard said 62 Lancer but I agree about the Valiant comments. When I looked at the engine, it looked like it was kinda cobbled together either for fit-up or just to make the show by deadline.
I was a little jaded by then after trudging through 2.2 million square feet of, cars, trucks, airplanes, boats, military vehicles, old restored construction equipment, etc. They advertise if it's piston powered it's there.