Ok, It has been several years since I tore the 100-6 apart. I have forgotten where the horns mount and how the mounting braket from Moss attaches to the horn and to wherever the horns mount.... Any help???
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Ron,
The only 'barn finds' I ever have are, well, finding a barn. Here's one I found. Moss probably has parts for it.

My Cars -- '57 MGA(Gone),'66 B (On The Road!!!)