I am trying to determine the type of horn and the location of it. Also, many horns are sold in pairs and I thought I need only a single horn. When I acquired my 1953 panel, the horn that came with it was quite long and fastened to the manifold as well as the brace rod that runs past the engine. Others have told me that the horn is a more compact type and mouted on the firewall, to the right of the engine.