Originally Posted by
Simon Barden
Where do you plan to put the piezo disk? There's a reasonably thick wooden block under the bridge area (to take the bridge posts) with a wooden support post underneath that. So it's not easy to stick the disk right under the bridge - normally the best spot. Anywhere else and the sound could be very bass-heavy. This may be less of an issue if you want a jazz sound.
I had an ES-1 to set-up that was fitted with the Tonerider Alnico IVs. Supposedly very close to the IIs they were very powerful - couldn't get a clean sound out of a Fender Blues Jr without turning the volume controls down to 4, as both pickups were overdriving the input. But I believe the IIs are a lot cleaner.