I built a piece to tie the two ends together and welded it to the rim.
Here is the piece I put in, it still needs a little work.
Here it is closed up. I may drill the new part so it can be pinned to keep it from shifting while it is installed.
To see what I needed to make I pulled the other rear to compare. Oddly enough it was totally different.
Here is the other side, it must be from a different year or model.