Made these brackets for a dual horn upgrade. They attach to the frame at the same place as the upper radiator brackets. Left bracket is nearly flat, right bracket needed some bends to work around the battery tray. The new pieces are very simple, but the process of trial fitting and fairing removal and replacement (many times) was a bear. Trial fitting the right side required moving the battery tray assembly out of the way many times as well. That bracket is slotted because removing the radiator bolt on that side would be even more of a pain. I mounted the relay on the original horn location. The new horns sound great, although when I used them yesterday in an attempt to get a horse out of my way, I got about the same response as the original squeaker. The free range horses in my neighborhood are oblivious for some reason. I'm not sure if they'd pay attention to a locomotive horn.