i don't know if this will help but i have a 93 ibanez sabre custom which has the h-s-s pickup configuration and i just recently installed emg's to replace the ibanez usa's.the two single coils were direct mounted and the emg's were set up for mounting rings but i just used a screw thin enough to go through the threads of the pickups and long enough to reach sufficient depth and installed it the same as the old ones.works great and by the way the emg single coils have much more bite and clarity than any other single coil i've ever heard,plus the 81 at the bridge is the most aggresive pickup ever,with absolutely no noise.