What do you need for parts? I've replaced spools and bearings for my old Dearborne harrow using parts from Agri Supply. Tillage Tools, Tillage Parts, Sweeps, Plows, Disc Blades, Hillers
I did have to grind down the spool ends a little to make them the right length but it was still a lot cheaper than buying OEM. I'm not trying to restore it, just use it.