Replace Schaller bridge?

[asher67]

My SG has a rectangular Schaller bridge, which was used briefly in the early 1970s. I would like to replace it with a lower mass bridge. Does anyone know whether the bridge post spacing is identical to the current Nashville-style bridge? If not, are other replacements available? Thanks in advance for your help.

 

[roknfnrol]

bump

 

[circusboy28]

I believe the Nashville is slightly wider