Seems expensive, for 50 dollars more i think i can buy an piezo.It's a Willinson/Gotoh VSVG Vintage Tremolo -finding just the saddles may prove to be a bit of work. STEWMAC
has the whole bridge - a bit pricey. maybe you can find the whole bridge elsewhere for less.
http:///Wilkinson_Gotoh_VSVG_Vintage_Tremolo.html
another
NEW - Wilkinson By Gotoh VSV-G Vintage Tremolo, NICKEL | eBay
Piezo could be a nice idea if you get all the bits to fit in the control cavity, though they don't sound great through a regular amp, IMO.
Thanks BeejWell, it depends what piezo system you get. There are several aftermarket ones. You could keep the jack btw, you might just have to replace it with a stereo one. All depends what you want to do with it.
I'd suggest doing some basic research, have a look at the companies that make piezo systems and see what they recommend.