69 Camaro Firebird Convertible Vibration Damper Question

[RamAirBirds]

I was under the impression that the Vibration Dampers (Cocktail Shakers) were the same for Camaro and Firebird Convertibles in 1969.
Can someone here please confirm?

[Rsconv68]

The brackets are different and a quick search on the web shows as such.