Projects 28-29 closed cab pickup & T coupe window frames.

Can anyone out there with a 28-29 Ford closed cab pickup or 26-27 T coupe or tudor tell me if the inside window frames are perfectly straight across the top or do they follow the slight arch or curve of the top of the door? The reproduction pieces are straight and I wonder if that is correct?
Thanks a bunch!
Joe

 

Mine are straight. They have been on the truck for over twenty years, so I would imagine that they are original.

The picture was taken from the back looking toward the front at the top of the door. Sorry if the previous photo orientation was confusing.