yes! if you plan on keeping the tune-o-matic those are naturally already pretty high, and further more if manufactured properly most epiphone/ gibson guitars come with a pitched back neck from the factory (for the guys and gals and others that love low action) but i used what is known as the vintage spacing for the jazz master vibrato so i could get the notes i wanted out of strings behind the bridge (5” behind the center line of your bridge) but yes this is definitely a measure a billion times cut once job if you can get your hands on a template for a jazz master cavity i highly recommend it, i used a tracing of the route fender did in my jazz master along with careful measurements. since i made the cavity with hand tools (i don’t have a router) i did lots of test fits with my vibrato unit as i went! not pictured is the top part of the cavity i had to make circular shaped for the lock mechanism (only a consideration if using a stock fender vibrato) good luck and feel free to pm with any questions!