An adapter for mounting a vibrato device, such as a Bigsby Vibrato, to an electric guitar without making changes to the guitar body is provided herein. The vibrato device replaces the stop tailpiece leaving available mounting holes for the adapter. The vibrato device is then mounted to the adapter without the need to alter the guitar by drilling holes. The adapter locates the vibrato device on the guitar in a manner to maintain the critical bend angle of the guitar strings over the bridge. The adapter, with a minimalist profile, is barely visible when mounted. Alternative embodiments provide an adapter kit and a method for mounting the adapter.