Looking for a Freeflyte Trem unit

Hi there I recently acquired an 82/83 Stratocaster from. A family member. I was laying around in parts in a box for years. Unfortunately the original schaller freeflyte trem has gone missing. Would anyone out there at all have a spare available or can make some recommendations on alternate bridges that can work with the current routing. I've been looking everywhere but cant seem to find any modern units that would work without having to modify the rout and Id like try and get it back together as original as possible. Cheers for any help.