Looking for new steering cylinder for case 680e or make a 580 one fit loo

I need new steering cylinders for my case 680e backhoe. I’ve honed and repacked all cylinders on the backhoe and drained and flushed all hyd fluid .

The steering cylinders are the only thing stopping me from running it any one know where I can buy some from ?

Can some one get my all the sizes from case580 steering cylinders to see if I can make them fit?

Looking for new steering cylinder for case 680e or make a 580 one fit loo