Looks to me like that front pivot is broken. If you have the piece a good old timer could weld/braze it back in. If nobody around, done a parts yard with one.
The bushings should be easier to find since they are a ware part. Even McMaster should have them if you know the correct size. They would also have shims that would work.
You might get lucky and find a dealer with all but the casting in stock.
Good luck with the repairs. Would be on the easier end of the repair spectrum.