My Abilene has the old style link...1.825". This part is currently unavailable. The new style is 1.440".
Then yours is the same style as Dad's. A Ruger transfer bar can be fitted to it with minimal effort. I had Jim Stroh do his. He said that welding on such a small casting would be tricky at best. He opted to replace with the Ruger part, rather than fix the original. It would cost a hell of a lot more to build a new one from scratch.