851c,
Both EAW and ERA make swing mount conversions for Suhler bases. In the first place, there is a great saving in the cost of labor and maybe some in parts. Equally important, swing mounts give a much greater choice of scopes than clawmounts would. The clawmount bases would have been placed to fit a particular scope and even if you knew what that was, there is small chance you could find another one or one similar enough to be useable. Swing mounts free you from many problems.
Mike