My McCarty has those vintage style tuners and PH1 PH2 won't fit it. There is an issue with them being too tall or headstock being too thin and not allowing enough down pressure on the nut. There is the fact too that you will have to drill new holes for mounting screws. Kinda sucks as I really want lockers on it. I did buy the Gotoh vintage style tuners which do drop in but I don't like them. They look just like the tuners that came with it but they aren't as handy as PH1 or PH 2. I will sell the Gotohs eventually.