1969 Barracuda 340 Formula S Restoration
You can but you still have to fill the vent for 67/68 doors on the lower edge.
Seems better to find a 69 door and replace.
Hard to tell but looks like you have tinted on the 69 and non tinted glass on the 67 door.
The structure of the early door does not have the full relief of the 69 either for the lock pivot!