Stebel/Denali horns

[Steve B]

Does anyone know if the Denali Sound Bomb and Stebel Nautilus horns are the same in dimensions/design? (made by the same company?).
I've managed to source a Stebel horn but can only find a Denali mounting bracket online. The image of the Denali shown, indicates the same design as my Stebel. Before I buy it, I was wondering if they were in essence one and the same. Anyone have an opinion?

 

[stroller]

Can't be certain, but I've always thought they look the same. If it was e I would take chance on the Denali bracket.