I had the horns from my 68 GTO recently restored by Gary Steinkellner of The Horn Works from Beloit Wisconsin. He rebuilt a set for my El Camino several years ago and they are still looking and working well. The craftsmanship is very good
If your are looking to restore that original set of horns I highly recommend him.
Gary Steinkellner
608-361-0095
www.carhornrestoration.com