There was a fake Little Anthony and the Imperials group in the UK back in the Roy Tempest days. I saw them at Sheffield City Hall in early 1968 with the Flirtations - a night put on by Pete Stringfellow in the aftermath of the Sheffield Mojo closure.
They're the one fake group who toured I saw that I've never ever found out who they were. They were very good as I remember - they did do Gonna Fix you Good.
John