These change hands new among the cognoscenti for around £70 - if you can still find one! I imported this one from the States.

This has been used and abused to squeeze it onto a failed project, but it should still work well in the right hands. 

Only one of the three sprung screws is still present, but the one that's there shows exactly what's required.

If the rear pickup on your guitar is too close to the bridge, this won't fit, obviously.

The metal part of the bridge is pretty crude and lacks the fine adjustabilty we're used to on most modern guitars, but the buzzy bit has to be heard to be believed, as I'm sure you know if you're still reading this.

I'll be listing more guitar-related items soon, so keep checking.

UK post free.

Thanks for looking! And good luck if you decide to bid.