Does anyione know if the Fender Vintage Strat Tremolo system would fit a Japaneese guitar (Non-Fender), that already has a six screw tremolo system? My guitar is a 1980's Kawai Aquarius. Thanks!
Most likely. Just drop it in and find out. If the holes line up and everything fits then try it.
If the holes don't line up, fill the holes with glue and toothpicks.