Horn Kit: 67-81F Low Note GM Service PartThe Low Note horn and mounting kit for most GM vehicles from the mid 60's up. GM SERVICE AC Delco SERVICE part. .. it is a metal look plastic.. but original looking and price applicable. Note too there is a specific repro horn kit available . See part number PW2401A & PW2401B. There is cheaper horns around for sure.. but trying to get this right like many other parts leads to one main design. BUICK 1966 2005 CADILLAC 1966 2005 CHEVROLET 1968 2000 GMC