Looking at the drawings, I would think you could salvage
the pulleys and cases that you have. Looks like you would need to grind the weld off of each side of the pulley pin and drive it out so you can get the pulley out through the bottom. Find a machine shop with a good verical mill, lathe, stainless steel
rod stock, welder, etc. and you should be able to have them repair it for a lot less than the cost of new. They may have to bore the pulley center out and make a larger diameter pin for you. You want a machine shop that can fabricate parts
, NOT an automotive repair machine shop.
If you can't find a good machine shop, email
me and I'll send you a contact. That would be a last resort because you would have to ship your pulley cases to them out of state. You really are better off finding someone you can talk to face to face with the parts and drawing in hand.