1967 Barracuda. Horns
There were two manufactures of horns during this era, Spartan and Prestolite. I'd have to look to see which I have on my 67.
The difference can be seen easily, one you can see the spiral, the other not. Some horns have a removable brackets some not, the brackets are clocked differently on different horns. When mounted both horns should point down.
So be careful in getting horns.
Alan