Allparts Gretsch Bar Bridge - Gold

A Towner Tension Bar would probably provide enough break angle to get the tremolo going. it is also reversible so you could replace it if you find a vintage correct tension bar. As for the bridge, it depends on how vintage correct you want it. It looks like they came with Bar Bridges which they still make, or you could opt for something like a truarc or Compton which would probably intonate better.