Horn Kit: 67-81F Hi Note GM Service PartThe High Note horn and mounting kit for most GM vehicles from the mid 60's up. GM SERVICE AC Delco 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 1966 2000 GMC 1966