How can you tell difference between 67-69 Barracuda doors

The interior bracing for the vent window frame is also different between the years, but I think the mystery has been solved here, that’s a 69 notchback door.
Yes, its a 69 Notchback door. Question is though, if you put this on a fast back car, would the window not seal tight in the roof line when window completely rolled up? Would you see a gap between window and roof line?