PS Gearbox and PS Pump Early A

Looking for a used power steering gearbox and pump for my 65 Dart. Mine are leaking and rebuilds are too expensive. Willing to take a chance on ones from a wrecked car or whatever. My pump is the TRW type. Car is a 273, now 318.
I do not have the skill or space to do any of the work myself. New parts don't exist. My mechanic has somebody who can rebuild them but it's going to be about $1500 including labor which I cannot afford.
Thanks

That seems excessive. You might want to look up a Hector Carrillo, in Palm springs area. He has a cottage business rebuilding / resealing GM power steering boxes and adding quick ratios. Maybe he does other makes. His reviews seem to be good, he's been on V8buick for many years. His avatar on www.V8buick.com has been "Carhex". Good luck in what ever you do. Dave S